31/99 as a percentage is 31.31%. This number is a rounded value that makes the fraction easier to understand when you think in terms of parts of a whole. It’s a quick way to see how big 31 out of 99 really is.
The fraction 31/99 is a little less than one third. If you compare it to 1/3 (which is about 33.33%), you can see that 31/99 is just a bit smaller. That’s why the percentage is a little under 33%.
When you work with percentages, the rounded form 31.31% is handy for everyday calculations, like figuring out a portion of a budget or a grade. It tells you that for every 100 parts, about 31.31 parts belong to the fraction 31/99.
