54/99 as a percentage is 54.55%. This rounded figure gives a quick sense of how large the fraction is compared to a whole.
The fraction 54/99 can be simplified to 6/11, which is still an improper fraction (the numerator is smaller than the denominator). Even in its reduced form, it represents the same part of a whole, just with smaller numbers.
In everyday situations, you might see this percentage used to describe test scores, survey results, or any scenario where a part of a total is needed. Rounding to two decimal places makes the number easy to read and compare with other percentages.