21/25 as a percentage is 84.00%. This value shows how much of a whole the fraction represents when we look at it in terms of parts per hundred.
The fraction 21/25 can be thought of as 21 out of 25 equal pieces. When those pieces are compared to 100 parts, they make up a little less than a full 100%, landing exactly at 84.00% after rounding to two decimal places.
In everyday situations, you might see this percentage used to describe test scores, discounts, or any situation where a part of a whole needs to be expressed in a familiar way. It’s a quick way to see that 21 out of 25 is a strong, above‑average amount.