Is there any way to make the Grand Total Column into a "Difference" column without having to paste special and manually calculate the field?
<TABLE style="WIDTH: 288pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=384 border=0 x:str><COLGROUP><COL style="WIDTH: 144pt; mso-width-source: userset; mso-width-alt: 7021" width=192><COL style="WIDTH: 44pt; mso-width-source: userset; mso-width-alt: 2157" span=2 width=59><COL style="WIDTH: 56pt; mso-width-source: userset; mso-width-alt: 2706" width=74><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; WIDTH: 144pt; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" width=192 height=17>Widgets</TD><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; WIDTH: 44pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" width=59>YEAR</TD><TD class=xl23 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: #ece9d8; WIDTH: 44pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" width=59> </TD><TD class=xl24 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: #ece9d8; WIDTH: 56pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" width=74> </TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17>Branch</TD><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>2008</TD><TD class=xl26 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>2009</TD><TD class=xl25 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent">Grand Total</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" align=right height=17 x:num>165</TD><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>199</TD><TD class=xl26 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>210</TD><TD class=xl25 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>409</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" align=right height=17 x:num>295</TD><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>374</TD><TD style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>239</TD><TD class=xl28 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>613</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" align=right height=17 x:num>297</TD><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>186</TD><TD style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>401</TD><TD class=xl28 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>587</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl29 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 0.5pt solid; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17>Grand Total</TD><TD class=xl29 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 0.5pt solid; BACKGROUND-COLOR: transparent" align=right x:num>759</TD><TD class=xl30 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: black 0.5pt solid; BACKGROUND-COLOR: transparent" align=right x:num>850</TD><TD class=xl31 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 0.5pt solid; BACKGROUND-COLOR: transparent" align=right x:num>1609</TD></TR></TBODY></TABLE>
<TABLE style="WIDTH: 288pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=384 border=0 x:str><COLGROUP><COL style="WIDTH: 144pt; mso-width-source: userset; mso-width-alt: 7021" width=192><COL style="WIDTH: 44pt; mso-width-source: userset; mso-width-alt: 2157" span=2 width=59><COL style="WIDTH: 56pt; mso-width-source: userset; mso-width-alt: 2706" width=74><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; WIDTH: 144pt; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" width=192 height=17>Widgets</TD><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; WIDTH: 44pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" width=59>YEAR</TD><TD class=xl23 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: #ece9d8; WIDTH: 44pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" width=59> </TD><TD class=xl24 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: #ece9d8; WIDTH: 56pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" width=74> </TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17>Branch</TD><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>2008</TD><TD class=xl26 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>2009</TD><TD class=xl25 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent">Grand Total</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" align=right height=17 x:num>165</TD><TD class=xl22 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>199</TD><TD class=xl26 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>210</TD><TD class=xl25 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>409</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" align=right height=17 x:num>295</TD><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>374</TD><TD style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>239</TD><TD class=xl28 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>613</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" align=right height=17 x:num>297</TD><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>186</TD><TD style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>401</TD><TD class=xl28 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" align=right x:num>587</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl29 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 0.5pt solid; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17>Grand Total</TD><TD class=xl29 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 0.5pt solid; BACKGROUND-COLOR: transparent" align=right x:num>759</TD><TD class=xl30 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: black 0.5pt solid; BACKGROUND-COLOR: transparent" align=right x:num>850</TD><TD class=xl31 style="BORDER-RIGHT: black 0.5pt solid; BORDER-TOP: black 0.5pt solid; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 0.5pt solid; BACKGROUND-COLOR: transparent" align=right x:num>1609</TD></TR></TBODY></TABLE>