7/55 as a percentage is 12.73%. This value tells you how much of a whole the fraction represents when you think in terms of hundredths.
The fraction 7/55 is a little bigger than one‑eighth (12.5%) but smaller than one‑seventh (about 14.3%). Seeing it as a percentage makes it easy to compare with other common numbers you might meet in everyday situations.
You might run into 12.73% when you look at a small discount, a probability of an event happening, or a portion of a budget. Knowing the percentage lets you quickly understand the size of the share without having to work with the original fraction.