90/91 expressed as a percentage is 98.90%. This means the fraction is almost a whole, falling just short of 100 %. When you see the number 98.90%, think of it as a very high proportion.
The fraction 90/91 is a simple ratio where the numerator is just one less than the denominator. Because the numbers are so close, the value is very near to 1, which is why the percentage is also near to 100 %. You might encounter this kind of ratio in situations like a test score where a student missed only one question out of many.
Rounded to two decimal places, the percentage stays at 98.90%, giving a clear and easy‑to‑read figure. This rounding makes it useful for reports, charts, or any place where a clean number is preferred.
