10/45 as a percentage is 22.22%. This number tells you how much of a whole the fraction represents when you look at it on a scale of 100.
The fraction 10/45 can also be simplified to 2/9, which is a common ratio in many everyday situations, like measuring parts of a pizza or dividing a class into groups. Knowing the percentage makes it easy to compare with other values that are already expressed out of 100.
When you see 22.22% on a chart or a report, you can quickly understand that the original amount is just a little over one‑fifth of the total. It’s a handy way to talk about the fraction without writing it out each time.