45/66 as a percentage is 68.18%. This fraction simplifies to about two‑thirds, and when you turn it into a percent it lands right around the 68% mark. The rounded figure makes it easy to compare with other numbers.
The fraction 45/66 can also be reduced to 15/22, but the percentage stays the same. Using the percent form helps when you need to work with budgets, grades, or any situation where a clear proportion is useful.
In everyday language, saying “about 68 %” is a quick way to describe the size of the part compared to the whole. It’s a handy figure for reports, presentations, or just checking how big something is.