Convert the percentage to a decimal by dividing by 100
Multiply the decimal by the number you want the percentage of
Use the formula: percentage × number = part
To find what percent one number is of another, divide the part by the whole and multiply by 100
To find the whole from a part and percentage, divide the part by the decimal form of the percentage
To increase a number by a percentage, multiply by 1 plus the decimal form of the percentage
To decrease a number by a percentage, multiply by 1 minus the decimal form of the percentage