Hi,

I want to know if you can edit the Subtotal function for a matrix? I have
two columns namely: TY, LY, % Diff (TY - LY). When I do a "Subtotal" it adds
even the % Diff column. I want it to do the equation TY-LY. Is there a way to
do that?

You should be able to use these expressions in your data cells:

=Sum(Fields!TY.Value)
=Sum(Fields!LY.Value)
=(Sum(Fields!TY.Value)-Sum(Fields!LY.Value))/Sum(Fields!TY.Value)

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