value 1 is a retail price decimal value 2 is the difference between 2 retail costs both are decimals
=IIF(Fields!Prorated.Value is null,"",Fields!Prorated.Value)-Fields!Retail.Value fixxed !!!
Fixxed ^^
=IIF(IsNothing(Fields!Prorated.Value),"",(Fields!Prorated.Value-Fields!CurrentRetailPrice.Value)/Fields!Prorated.Value)
Failed ^^ this one is shown as a % difference
this has not worked what would be another way around this