36/51 as a percentage is 70.59%. This is the simplest way to state the value when you need a quick, easy‑to‑read figure.
The fraction 36/51 can also be reduced to 12/17, but the percentage form is often more helpful for everyday comparisons, like checking scores or measuring parts of a whole.
When you see 70.59% on a chart or in a report, you know it represents the same proportion as the original fraction 36/51, just expressed in a more familiar format.