The fraction 3/20 is equal to 15.00%. This tells you that for every 100 parts, 15 of them belong to the original fraction.
Seeing it as a percent makes it easy to compare with other numbers. If you have 100 items, 15 of them would represent the same portion as 3 out of 20 items.
In everyday life you might use this when measuring a discount, a test score, or a recipe. Knowing that 3/20 is 15 percent helps you quickly figure out how much of something you have.
Remember, 15.00% is just another way to show the same amount that 3/20 represents.