Hope this will help you
=IIf(IsNothing(Fields!field1.Value)Or IsNothing(Fields!field2.Value) ,0,((Fields!field1.Value)/(Fields!field2.Value)*100))
If you are not clear, revert back to me
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Please feel free to let me know if you are not clear or I’ve misunderstood anything.
Thanks,
Arunkumar S P