If field a is $769.89 and it is multiplied by .05 then field b will show 808.39. This works fine, however I need to do this:

Field a will be user input, field b will also be user input but field c will be the calculation. Any advice??

What kind of advice are you looking for? a*b=c?

In my layout I have dealer cost field and SRP field. I want a field that would show the profit in percentage. So if the dealer cost is 769.89 and the SRP is 808.39, the field I am working on will show the profit percentage as .05.

Try ( price / cost ) - 1.

(SRP - cost ) / cost

Thanks Comment, that was it...