18/81 as a percentage is 22.22%. This is the rounded value you get when you turn the fraction into a percent with two decimal places.
The fraction 18/81 can be simplified to 2/9, which shows the same proportion in a smaller form. Both the fraction and its percent tell you that the part is a little more than one‑fifth of the whole.
When you see 22.22% on a chart or a report, you now know it comes from the simple ratio 18 out of 81. It’s a handy way to compare sizes without using fractions.
Remember, using percentages like this makes it easier to talk about parts of a whole in everyday situations, from grades to discounts.
