15/65 as a percentage is 23.08%. This value tells you how much of a whole 15 parts represent when the whole is split into 65 equal pieces. It’s a quick way to see the size of the fraction in everyday terms.
The fraction 15/65 can be simplified to 3/13, which still represents the same portion of a whole. Even after simplification, the percentage stays the same because the relative size doesn’t change.
When you see 23.08% in a chart or a report, you know it’s the same as saying “15 out of 65.” Using percentages makes it easier to compare with other numbers that are already expressed in percent form.