What is 17/80 as a percentage? It’s 21.25%. The fraction 17/80 means you have 17 parts out of a total of 80, which is just a little more than one‑fifth of the whole.
When you see 21.25% written next to a number, it tells you how much of that number is represented by the fraction 17/80. For example, if you have 80 apples, 17 of them would be the same as 21.25% of the apples.
In everyday use, percentages like this help compare parts of different totals. Whether you’re looking at a test score, a discount, or a statistic, knowing that 17/80 equals 21.25% lets you quickly see the size of the piece relative to the whole.