13 out of 71 is a small fraction that shows up in many quick calculations. When you turn it into a percentage, you get 18.31%.
This percentage tells you that 13 is just under one‑fifth of 71. It’s useful when you need to compare parts of a whole without dealing with messy fractions, especially in everyday situations like sports stats or simple budgeting.
Remember that the value is rounded to two decimal places, so the true number is a tiny bit different, but for most practical purposes 18.31% is accurate enough.