82/90 as a percentage is 91.11%. This number tells you how much of a whole the fraction represents when it’s turned into a percent.
The fraction 82/90 is already close to one whole, since the numerator is only a little smaller than the denominator. In decimal form it is about 0.91, which is why the percent is just over 90%.
Rounding to two decimal places gives 91.11%, which is precise enough for most everyday uses without getting into long, unwieldy numbers.
Percentages like this are handy for quickly comparing parts of a whole, such as test scores, discounts, or statistical data, because most people find a percent easier to read than a fraction or a long decimal.
