5/8 as a percentage is 62.50%. This number tells you how much of a whole 5 parts out of 8 represent when you look at it on a scale of 100.
The fraction 5/8 shows up in everyday situations, like cutting a pizza into 8 slices and taking 5 of them. When you want to compare that portion to a full pizza, thinking in percentages makes it easy to understand quickly.
Because we rounded to two decimal places, the result is precise enough for most uses, such as grading or budgeting, without getting too complicated.