The fraction 18⁄99 is equal to 18.18% when written as a percentage. This value is rounded to two decimal places, so it’s easy to read and compare with other percentages.
If you simplify 18⁄99, you get the smaller fraction 2⁄11, which still represents the same part of a whole. Both fractions give the same percentage result, so you can use whichever form feels more comfortable.
Knowing that 18⁄99 is about 18 percent helps when you need to estimate parts of a group, calculate discounts, or compare data. It’s a quick way to see that the fraction is just under one‑fifth of the whole.