21/31 as a percentage is 67.74%. This value tells you how much of a whole 21 parts out of 31 represent when you look at it on a scale of 100.
In everyday terms, saying something is 67.74% means it’s a little more than two‑thirds of the whole. If you had 31 items and you took 21 of them, you would have taken roughly 68 out of every 100 items.
Understanding percentages like this helps when comparing fractions, calculating discounts, or figuring out scores. It turns a tricky fraction into a familiar number you can easily use in real‑world situations.