This is the formula I figured to apply a discount when there is a total already summing in the total cell
I named my
subtotal, tax1, tax2 SUBTOTAL
In my total cell I inserted the formula =SUM(subtotal-(subtotal*discount))
and I named my discount cell DISCOUNT
In order to prevent a #value in the total cell remember to use CTRL+SHIFT+ENTER after you enter the formula
It is working for me!!!!
Acorn