1% is 1⁄100. Work out 1% by dividing by 100. This building block of 1% can be multiplied to find other percentages. For example, to find 2% multiply 1% by 2. To find 3%, multiply 1% by 3.

5, or 50 percent. Another example: You sell an item for $4 that costs you $2.50. Your gross profit is $1.50. The ratio of your gross profit to sales price is 1.5 divided by 4, or .375. So your ...

Used in finance, science, and more, percentages help compare proportions. They're vital for data analysis, like calculating test scores or population growth. For example, a 20% discount on ...