Hi,

Here what I am trying to do. When I creating the Pivot Table, the table auto
calculating the Grand Total field. What I am looking for the Differences from
one month to another not the grand total. See example.

This is what I have
2007-02-28 2008-02-28 Grand Total
$100.00 $80.00 $180.00
$180.00 $310.00 $490.00


This is what I am looking to get..
2007-02-28 2008-02-28 Diff
$100.00 $80.00 -$20.00
$180.00 $310.00 $130.00

Can any one tell me how can I get the differences rather than the grand total?