Just turn it into a pivot table. Put Month and Client in the Rows, and put Month in the Values as well.
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adding; color:black; font-size:11.0pt; font-weight:400; font-style:normal; text-decoration:none; font-family:Calibri, sans-serif; mso-font-charset:0; mso-number-format:"d\\-mmm"; text-align:left; vertical-align:bottom; mso-background-source:auto; mso-pattern:auto; white-space:nowrap;}.xl6516429 {color:black; font-size:11.0pt; font-weight:400; font-style:normal; text-decoration:none; font-family:Calibri, sans-serif; mso-font-charset:0; mso-number-format:General; text-align:left; vertical-align:bottom; mso-background-source:auto; mso-pattern:auto; white-space:nowrap; padding-left:9px; mso-char-indent-count:1;}--></style></head>******><!--[if !excel]> <![endif]--><!--The following information was generated by Microsoft Excel's Publish as WebPage wizard.--><!--If the same item is republished from Excel, all information between the DIVtags will be replaced.--><!-----------------------------><!--START OF OUTPUT FROM EXCEL PUBLISH AS WEB PAGE WIZARD --><!-----------------------------><div id="Book2_16429" align=center x

ublishsource="Excel"><table border=0 cellpadding=0 cellspacing=0 width=246 style='border-collapse: collapse;table-layout:fixed;width:185pt'> <col width=35 style='mso-width-source:userset;mso-width-alt:1280;width:26pt'> <col width=114 style='mso-width-source:userset;mso-width-alt:4169;width:86pt'> <col width=97 style='mso-width-source:userset;mso-width-alt:3547;width:73pt'> <tr height=20 style='height:15.0pt'> <td height=20 class=xl1516429 width=35 style='height:15.0pt;width:26pt'></td> <td class=xl6316429 width=114 style='width:86pt'>A</td> <td class=xl6316429 width=97 style='width:73pt'>B</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>3</td> <td class=xl1516429 style='font-size:11.0pt;color:white;font-weight:700; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri;border-top:1.0pt solid #305496;border-right:none; border-bottom:none;border-left:none;background:#4472C4;mso-pattern:#4472C4 none'>Client Name</td> <td class=xl1516429 style='font-size:11.0pt;color:white;font-weight:700; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri;border-top:1.0pt solid #305496;border-right:none; border-bottom:none;border-left:none;background:#4472C4;mso-pattern:#4472C4 none'>Month Total</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>4</td> <td class=xl6416429 style='font-size:11.0pt;color:black;font-weight:700; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri;background:#D9E1F2;mso-pattern:#D9E1F2 none'>42629</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:700;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri;background:#D9E1F2;mso-pattern:#D9E1F2 none'>2</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>5</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 1</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>1</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>6</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 8</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>1</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>7</td> <td class=xl6416429 style='font-size:11.0pt;color:black;font-weight:700; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri;background:#D9E1F2;mso-pattern:#D9E1F2 none'>42659</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:700;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri;background:#D9E1F2;mso-pattern:#D9E1F2 none'>3</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>8</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 2</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>1</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>9</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 3</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>1</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>10</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 8</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>1</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>11</td> <td class=xl6416429 style='font-size:11.0pt;color:black;font-weight:700; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri;background:#D9E1F2;mso-pattern:#D9E1F2 none'>42690</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:700;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri;background:#D9E1F2;mso-pattern:#D9E1F2 none'>11</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>12</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 10</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>2</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>13</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 3</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>2</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>14</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 4</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>2</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>15</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 5</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>2</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>16</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 6</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>1</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>17</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 7</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>1</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>18</td> <td class=xl6516429 style='font-size:11.0pt;color:black;font-weight:400; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri'>Name 9</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:400;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri'>1</td> </tr> <tr height=20 style='height:15.0pt'> <td height=20 class=xl6316429 style='height:15.0pt'>19</td> <td class=xl6416429 style='font-size:11.0pt;color:black;font-weight:700; text-decoration:none;text-underline-style:none;text-line-through:none; font-family:Calibri;border-top:.5pt solid #305496;border-right:none; border-bottom:1.0pt solid #305496;border-left:none'>Grand Total</td> <td class=xl1516429 align=right style='font-size:11.0pt;color:black; font-weight:700;text-decoration:none;text-underline-style:none;text-line-through: none;font-family:Calibri;border-top:.5pt solid #305496;border-right:none; border-bottom:1.0pt solid #305496;border-left:none'>16</td> </tr> <![if supportMisalignedColumns]> <tr height=0 style='display:none'> <td width=35 style='width:26pt'></td> <td width=114 style='width:86pt'></td> <td width=97 style='width:73pt'></td> </tr> <![endif]></table></div><!-----------------------------><!--END OF OUTPUT FROM EXCEL PUBLISH AS WEB PAGE WIZARD--><!-----------------------------></body></html>
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adding; color:black; font-size:11.0pt; font-weight:700; font-style:normal; text-decoration:none; font-family:Calibri, sans-serif; mso-font-charset:0; mso-number-format:General; text-align:center; vertical-align:bottom; border:.5pt solid windowtext; mso-background-source:auto; mso-pattern:auto; white-space:nowrap;}--></style></head>******><!--[if !excel]> <![endif]--><!--The following information was generated by Microsoft Excel's Publish as WebPage wizard.--><!--If the same item is republished from Excel, all information between the DIVtags will be replaced.--><!-----------------------------><!--START OF OUTPUT FROM EXCEL PUBLISH AS WEB PAGE WIZARD --><!-----------------------------><div id="Book2_16433" align=center x

ublishsource="Excel"><table border=0 cellpadding=0 cellspacing=0 width=156 style='border-collapse: collapse;table-layout:fixed;width:118pt'> <col width=78 span=2 style='mso-width-source:userset;mso-width-alt:2852; width:59pt'> <tr height=20 style='height:15.0pt'> <td colspan=2 height=20 class=xl6316433 width=156 style='height:15.0pt; width:118pt'>Formulas</td> </tr> <![if supportMisalignedColumns]> <tr height=0 style='display:none'> <td width=78 style='width:59pt'></td> <td width=78 style='width:59pt'></td> </tr> <![endif]></table></div><!-----------------------------><!--END OF OUTPUT FROM EXCEL PUBLISH AS WEB PAGE WIZARD--><!-----------------------------></body></html>