21/72 as a percentage is 29.17%. This number tells you how much of a whole the fraction represents when the whole is taken as 100 %.
The fraction 21/72 can be reduced to 7/24, which still gives the same percentage. Seeing it as a percent makes it easier to compare with other values that are already in percent form.
Percentages like 29.17% are useful in everyday situations—such as figuring out a discount, a test score, or a portion of a budget. Knowing the percent quickly shows how big or small the part is relative to the whole.
