33/63 expressed as a percentage is 52.38%. This is the rounded value you get when you turn the fraction into a percent.
The fraction 33/63 can also be simplified to 11/21, but the percentage stays the same. Whether you see it as 33 out of 63 or 11 out of 21, the result is still about fifty‑two percent.
In everyday use, you can think of 52.38% as just over half of a whole. It’s a handy number when you need to compare parts of a group or calculate portions in a simple way.