Well, once you get the class junk out of the way, I'd say this
is pretty short/elegant, certainly more along the lines of what the OP was looking for.
discount = Percent(20)
origprice = 35.00
saleprice = origprice - discount
Percent is more than just a fancy wrapper around "divide by 100". Note that discount can be subtracted from any number of other values, and it will calculate the respective percentage before returning the value.
Are you the curmudgeon-in-residence on these forums?
-- Paul