SSRS - Conditional Formatting of Text or Matrix / Table Cell Background | Rotate Text in SSRS

First Step:

Second Step:

Here in background color we write an expression:

   =IIF(SUM(Fields!DIFF.Value)<SUM(Fields!Target.Value),"Red",IIF(SUM(Fields!DIFF.Value)>SUM(Fields!Target.Value),"Green","Khaki"))

Result: