72/90 as a percentage is 80.00%. This value is already rounded to two decimal places, so you can use it directly in any calculation that needs a percentage.
The fraction 72/90 can be reduced by dividing both the numerator and the denominator by their greatest common divisor, 18. This gives the simpler form 4/5, which is easier to recognize and work with in everyday situations.
Percentages like 80.00% are useful for comparing parts to wholes, such as measuring how much of a goal has been reached or what portion of a class completed a task. Knowing the percentage helps you quickly understand the size of the fraction without having to work with the numbers directly.