84/85 is 98.82%. This means the fraction is just a little short of a full whole, and when you look at it as a percent it almost reaches 100 %.
The fraction 84/85 shows how a large part of something can be expressed with a small denominator. Because the numerator is only one less than the denominator, the value is very close to 1, which is why the percentage is so high. It’s a handy way to see that most of the total is included.
You’ll see this kind of number in everyday situations, like a test score where you miss just one question out of 85, or a quality check where 84 out of 85 items pass. In all those cases, the result is roughly 98.82%, a clear sign of strong performance.