55.00% is the percentage form of the fraction 11/20.
This fraction is a little more than one half, so when you see it on a chart or in a report, you can think of it as just over 50 %. It’s a handy way to compare parts of a whole when numbers are easier to read as percentages.
In everyday situations—like figuring out a discount, a test score, or a portion of a recipe—knowing that 11/20 equals 55.00% lets you quickly understand the size of the part relative to the whole.