The fraction 21/91 works out to 23.08% when you write it as a percentage.
If you simplify the fraction first, it becomes 3/13, but the value stays the same. This makes it easier to see how small the part is compared to the whole.
Knowing the percentage helps when you compare parts of a whole, like figuring out a discount or a test score. It’s a quick way to understand the size of the fraction in everyday terms.