What is 31/87 as a percentage? It is 35.63% (rounded to two decimal places). This tells you that if you split something into 87 equal parts, 31 of those parts make up about a third of the whole.
The fraction 31/87 can be thought of as a slice of a pizza cut into 87 pieces, where you have 31 slices. It’s a little more than one‑third of the pizza, which matches the 35.63% value.
Because we rounded to two decimal places, the exact decimal might be a bit different, but for most everyday uses the 35.63% figure is accurate enough. This kind of quick conversion helps when you need to compare fractions with percentages in reports or school work.