If + Divide and Percentage - One Of The Parameters is Invalid

Simple division percentage equation, but only if {Rebate Amount}>0. I am getting the proper calculations for other rows but the rows where {Rebate Amount}=0 I get invalid parameter.

I have tried:

IF({Deal Type}=“Standard”,0,{Reb Rec’d}/{Rebate Amount}*100)

IF({Rebate Amount}>0,{Reb Rec’d}/{Rebate Amount}*100,0)

IF({Rebate Amount}<>0,{Reb Rec’d}/{Rebate Amount}*100,0)

I have also done all the above using the divide function instead of just {Reb Rec’d}/{Rebate Amount}

I feel it must be something with roll ups, dividing by zero, or a text vs. number issue?