15/91 as a percentage is 16.48%. This fraction is a small part of a whole, and when you see it written as a percent it gives a quick sense of its size.
The fraction 15/91 can also be thought of as 15 parts out of 91 equal pieces. In everyday situations, percentages are easier to compare, so 16.48% tells you that roughly one-sixth of something is taken.
If you need to use this number in a report or a project, just write 16.48% and you’ll be clear and accurate. It’s a handy way to show the relationship without dealing with messy fractions.