The fraction 75/78 as a percentage is 96.15%. This rounded figure gives a quick sense of how large the fraction is compared to a whole.
Since 75 is only three units short of 78, the fraction is very close to 1, which explains why its percentage is just under 100 %. It’s a handy way to see that the value is almost complete.
In everyday situations, such as grading or measuring efficiency, you might see 96.15% used to show a high level of achievement or performance. The rounded percentage keeps the number easy to read while still being accurate enough for most purposes.