71/86 expressed as a percentage is 82.56%. This number tells you how large the fraction is compared to a whole, using the familiar percent format.
The fraction 71/86 cannot be reduced any further, so it stays in its simplest form. It represents 71 parts out of a total of 86 equal parts.
Percentages like this are handy when you want to compare things quickly. For example, a test score of 71 out of 86 points would be shown as 82.56%, making it easy to see the performance at a glance.
Remember, rounding to two decimal places gives the clean value 82.56%, which is the standard way to report such results.