81/82 as a percentage is 98.78%. This number shows how close the fraction is to a whole, meaning it’s just a tiny bit less than 100 %.
The fraction 81/82 can be thought of as 81 parts out of 82 equal parts. Because only one part is missing, the value feels almost complete, which is why the percentage is so high.
When you see a percentage like 98.78%, you can quickly understand that the original amount is nearly whole, with only about 1.22 % left out. This makes 81/82 a handy way to represent something that is almost, but not quite, 100 %.