52/87 as a percentage is 59.77%. This rounded figure tells you how much of a whole the fraction represents when you look at it in terms of hundredths.
The fraction 52/87 can be thought of as 52 parts out of 87 equal parts. When you compare those parts to a whole (100 parts), the result is just under 60%, which is why the percentage comes out to 59.77%.
Knowing the percentage makes it easier to compare this value with other numbers that are already expressed as percentages, like grades or discount rates. It’s a quick way to see that 52/87 is a little more than halfway to a full 100%.