reporting services - Convert Crystal Reports formula to SSRS expression -

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if {field_a} = 0 0 else (({field_b} / {field_a})*100)

i trying convert formula ssrs expression. have tried many different =iff statements, cannot seem run correctly.

almost duplicate question: if search here #error ssrs iif you'll plenty of results, such does iif function compute both paths in ssrs or short-circuited?

rewriting statement straightforward then:

=iif(    fields!field_a.value = 0,    0,    fields!field_b.value /    iif( fields!field_a.value = 0, 1, fields!field_a.value) * 100 )

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