33/75 as a percentage is 44.00%. This rounded figure gives a quick sense of how large the fraction is compared to a whole.
The fraction 33/75 can be simplified to 11/25, which is an easy fraction to work with. Both forms represent the same part of a whole, just expressed differently.
Seeing the percentage helps when you compare numbers in everyday situations, like discounts, test scores, or statistics. A value of 44.00% tells you that the amount is a little less than half of the total.