90.91% is the percentage equivalent of the fraction 50/55.
The fraction 50/55 can be simplified to 10/11, which still represents the same value. Whether you write it as a fraction or a decimal, it shows a large portion of a whole—just a little under one whole unit.
In everyday terms, saying something is 90.91% means it is almost complete. This kind of percentage is useful when you want to compare parts of a whole in a clear, easy‑to‑understand way.