The fraction 21/85 is equal to 24.71% when converted to a percentage. This means that if you had 85 items and took 21 of them, you'd have about a quarter of the total. It's a bit less than 25%, which would be exactly one-fourth.
In everyday life, you might see this percentage used in various situations. For example, if a store sold 21 out of 85 shirts in stock, they could say they sold 24.71% of their inventory. Or if 21 out of 85 students passed a test, a teacher might report that 24.71% of the class succeeded. While it's not a common fraction like 1/2 or 1/4, understanding 21/85 and its percentage equivalent can be useful in certain contexts.