80/87 as a percentage is 91.95%. This value shows how close the fraction is to a whole number when expressed in percent form.
The fraction 80/87 is a proper fraction, meaning the numerator is smaller than the denominator. It represents a little less than one whole, which is why its percent value is just under 100%.
When you see 91.95% on a chart or a report, you know it comes from the same ratio of 80 parts out of 87. It’s a handy way to compare this fraction with other numbers that are already in percent form.