64/89 as a percentage is 71.91%. This value is the rounded result you get when you change the fraction into a percent with two decimal places.
The fraction 64/89 is a proper fraction, meaning the numerator is smaller than the denominator. It can be used in everyday situations, like figuring out a part of a whole when the total is divided into 89 equal pieces and you have 64 of them.
When you see 71.91% written on a report or a chart, you know it represents the same relationship as 64 out of 89. It’s a handy way to compare that part to other percentages without dealing with fractions.