31/99 as a percentage is 31.31%. This number shows how much of a whole 31 parts out of 99 represent when we think in terms of 100. It’s a handy way to compare this fraction with everyday percentages like 25% or 50%.
The fraction 31/99 is a bit more than one‑third, since one‑third is 33.33%. Because the denominator (99) is close to 100, the percentage is almost the same as the numerator (31) but a little higher, landing at 31.31%.
When you see 31.31% in a chart or a report, you now know it means the same thing as the fraction 31/99. It’s a quick way to understand the size of that part relative to a whole.