81/89 is approximately 91.01% when expressed as a percentage. This fraction is just a little under one whole, so its percent value is close to 100% but a bit lower.
The fraction 81/89 can be thought of as 81 parts out of a total of 89 equal parts. When you compare it to a whole, you see that it represents a large portion, which is why the percentage is in the low nineties.
In everyday terms, if you had 89 pieces of something and you owned 81 of them, you'd own about 91 out of every 100 pieces. This makes it easy to picture how big the share is without dealing with the exact numbers.
