45/66 as a percentage is 68.18%. This number tells you how much of a whole the fraction represents when you look at it in terms of hundredths.
If you simplify 45/66, you get 15/22, which is still the same value. The fraction is a little more than two‑thirds, and that’s why the percentage is a bit higher than 66.67%.
Knowing the percentage makes it easy to compare this fraction to other numbers, especially when dealing with scores, discounts, or any situation where “out of 100” is the common language.
So whenever you see 45/66, you can think of it as 68.18%, a clear, easy‑to‑understand way to describe the portion of a whole.
