Description: Percents are parts per hundred. So, how does this work for percents greater than 100% like 109%? Created by Sal Khan and Monterey Institute for Technology and Education. So just as a bit of review, 109% if we were to write it out, would literally be 109 percent, which is the same thing as 109 per and I could write cent again, but that's getting old. So let's shade that in. So we have a whole here, so we could consider this square a whole.*Teacher Advisor is 100% free.