Click on the Pivot table.

PivotTable Tools = Options = Formulas = Calculated Field...

Name: Comparison
Formula: = February - January

Click Yes if this is helpful.

"Nate" wrote:

I have a pivot table that shows gross revenue by month. The months are the
column headers. Is it possible to create a field within the pivot table that
shows the variance between January and February's gross revenue? I don't
have access to the source data. Thanks,

Nate
XL2003