A percentage is a way to show a number as a part of 100. Imagine you have 100 pieces of candy, and you want to divide it among your friends. To figure out how many pieces of candy each friend gets, you can use percentages.
For example, if you want to give 30% of the candy to one friend, that means you would give 30 of the 100 pieces to that friend. To find 30% of 100, you would multiply 100 by 0.30, which is 30. So, 30% of 100 is 30.
Another way to think about percentages is to think of them as fractions with a denominator of 100. So, 30% is the same as 30/100, or 0.30.
Percentages are used in many different ways, like to show discounts, to calculate grades in school, or to compare the size of different things. They are a useful way to describe and compare parts of a whole.