64/77 as a percentage is 83.12%. This value shows how much of a whole the fraction represents when it is expressed in percent form.
The fraction 64/77 is a proper fraction, meaning the numerator (64) is smaller than the denominator (77). It can be reduced only by dividing both numbers by their greatest common divisor, which in this case is 1, so the fraction is already in its simplest form.
Percentages like 83.12% are useful in everyday situations, such as comparing test scores, calculating discounts, or analyzing data. Knowing that 64/77 equals about 83.12% lets you quickly see that the number is just a bit over four‑fifths of a whole.