13/46 as a percentage is 28.26%. This is the rounded value you get when you express the fraction in percent form, keeping two decimal places.
The fraction 13/46 cannot be simplified any further because 13 and 46 share no common factors other than 1. It represents a little more than a quarter of a whole, which is why the percentage is just under 30%.
Knowing the percent makes it easy to compare this part to other numbers, especially in everyday situations like grades, discounts, or statistics. The rounded figure 28.26% gives a quick, clear picture without getting lost in long decimals.