85.71% is the percentage equivalent of the fraction 78/91. This value is rounded to the nearest two decimal places and gives a quick sense of how large the fraction is in everyday terms.
The fraction 78/91 is a proper fraction, meaning the numerator is smaller than the denominator. It represents a little more than four‑fifths of a whole, which is why its percentage is close to 86%. You might see a similar ratio in situations like scoring 78 out of 91 points on a test or completing 78 of 91 steps in a project.
When you need to compare this fraction with others, the percentage form is handy. For example, 85.71% is higher than 80% (which would be 4/5) but lower than 90% (9/10). Using percentages makes it easy to communicate the size of the fraction to anyone, even if they aren’t comfortable working directly with fractions.