5/81 as a percentage is 6.17%. This rounded figure gives a quick sense of how large the fraction is compared to a whole.
The fraction 5/81 is a proper fraction, meaning the numerator (5) is smaller than the denominator (81). It represents a small part of a whole, which is why its percentage value is under 10 %.
You’ll often see this kind of conversion when comparing test scores, survey results, or any situation where a fraction needs to be expressed in a more familiar form. Knowing that 6.17% of something is the same as 5/81 can make it easier to communicate the size of that part.