What is 72/80 as a percentage? It is 90.00%.
The fraction 72/80 can be reduced to a simpler form, but its value stays the same. When you look at it as a part of a whole, it shows that 72 out of every 80 parts are present.
Seeing this as a percentage makes it easy to compare with other numbers. A value of 90.00% means you have nine‑tenth of the whole, which is a clear and straightforward way to understand the size of the fraction.