When you change 20/84 into a percent you get 23.81%. This is the rounded value you would see on a report or a chart.
The fraction 20/84 can also be reduced to 5/21, which shows the same relationship in a simpler form. Whether you use the original fraction or the reduced one, they both represent the same part of a whole.
In everyday situations, you might round 23.81% to 24 % for quick estimates, but the precise figure is useful when you need accuracy, like in budgeting or grading. It’s a handy number to remember when comparing parts of a set.