15/80 = 18.75%
A fraction like 15/80, or 18.75%, might describe a sale discount, a survey result, or the share of students who chose a certain option. It’s a little less than one-fifth of the whole.
To picture it quickly, imagine dividing something into five equal parts and shading almost one full part. Since one-fifth is 20%, 18.75% is close, but just a bit smaller.
One common point of confusion is treating 18.75% as though it means 18.75 out of 10 instead of 18.75 out of 100. Also, a fraction’s size depends on the whole it refers to, so 15 people out of 80 means something different from 15 people out of 800.