6/55 as a percentage is 10.91%. This rounded figure gives a quick sense of how large the fraction is compared to a whole. It’s useful when you need to compare it with other percentages in everyday contexts.
The fraction 6/55 can also be thought of as a small part of 55 equal pieces, where you have taken 6 of them. In decimal form it is about 0.1091, which translates directly into the percentage shown above.
When you see 10.91% on a chart, a bill, or a test score, you now know it represents the same value as the fraction 6/55. This makes it easy to switch between the two ways of expressing the same quantity.