15/20 as a percentage is 75.00%. This tells you that the fraction represents three‑quarters of a whole. When you see 75.00%, you know it’s the same amount as 15 out of 20 parts.
The fraction 15/20 can be simplified to 3/4, which is a common way to show three equal parts out of four. Both forms describe the same portion of a set, just using different numbers.
In everyday life, you might see 75.00% on a sales sign offering a 25 % discount, or in a report showing that three‑quarters of a group completed a task. It’s a handy figure that quickly conveys a large, but not complete, portion.