Hi All,

Is there a way to have custom calculations in a subtotal. Using Data
-- Subtotal gives you the standard (sum, avg, count, etc.).

Name Sales Hist Sales Sale +/- Hist
---- ----- ---------- -------------
A 5 6 -16.67
Sub Total 5 6 -16.67
B 4 5 -20.00
Sub Total 4 5 -20.00
C 3 2 -50.00
Sub Total 3 2 -50.00
D 1 2 -50.00
Sub Total 1 2 -50.00
Grand Total 13 15 -13.33

Sales and Hist Sales are summed using Excel's built in subtotaling
feature, however, I would like a custom calculation at each subtotal =
(sales-hist sales)/sales*100. All subtotals should be on the same
line. So, the subtotal for sales, hist sales, and sales +/- should be
on the same line. How can I accomplish this? Any help would be much
appreciated.

TIA