13/15 expressed as a percentage is 86.67%. This figure comes from rounding the exact value to two decimal places, which makes it easy to read and use in everyday situations.
The fraction 13/15 shows that 13 parts out of a total of 15 are being considered. In practical terms, you can think of it as getting 13 out of 15 items, 13 correct answers out of 15 questions, or 13 slices from a pizza cut into 15 equal pieces.
Because the percentage is rounded, the true value is a tiny bit higher, but 86.67% is accurate enough for most reports, grades, and simple calculations. It gives a clear picture of how large a portion 13/15 represents.