46/99 as a percentage is 46.46%. This number tells you how much of a whole the fraction represents when you look at it in terms of hundredths.
The fraction 46/99 is a little less than one half. It cannot be reduced any further because 46 and 99 share no common divisor besides 1. When you write it as a decimal, it repeats the pattern “0.4646…”, which is why the rounded percentage ends with .46.
Knowing the percentage makes it easy to compare 46/99 with other amounts, such as grades, discounts, or survey results. It shows that the value is just under the midpoint of a full 100 % scale.