I have a pivot table (below) that shows NPS Results in a columnar format. Is there a way to calculate (subtract) the 'Promoter' score from the 'Detractor' score within the pivot table? For example: I would like a column listed as 'Difference' where Atlanta the result would be 11 (14 minus). I know how to create a calculated field when comparing two different fields, but is there a way to create a calculation of the results of one field when they are displayed in columnar format?
<colgroup><col width="245" style="width: 184pt; mso-width-source: userset; mso-width-alt: 7840;">
<col width="214" style="width: 161pt; mso-width-source: userset; mso-width-alt: 6848;">
<col width="104" style="width: 78pt; mso-width-source: userset; mso-width-alt: 3328;">
<col width="63" style="width: 47pt; mso-width-source: userset; mso-width-alt: 2016;">
<col width="73" style="width: 55pt; mso-width-source: userset; mso-width-alt: 2336;">
<tbody>
</tbody>
| count of NPS Result | NPS Result | |||
| Area | District | Detractor | Passive | Promoter |
| CAPITAL METRO | ATLANTA | 3 | 2 | 14 |
| CAPITAL METRO | BALTIMORE | 2 | 4 | 23 |
| CAPITAL METRO | CAPITAL | 2 | 2 | 22 |
| CAPITAL METRO | GREATER SOUTH CAROLINA | 3 | 2 | 23 |
| CAPITAL METRO | GREENSBORO | 1 | 3 | 16 |
| CAPITAL METRO | MID-CAROLINAS | 2 | 14 | |
| CAPITAL METRO | NORTHERN VIRGINIA | 1 | 4 | 5 |
| CAPITAL METRO | RICHMOND | 1 | 3 | 19 |
| CAPITAL METRO Total | 15 | 20 | 136 |
