Calculating percentages is a key concept in mathematics. Percentage calculations are important in all forms of mathematics including algebra, geometry and calculus. They're also utilized in many sciences such as chemistr... More »

Percentage, often represented by "%," is a way to say parts per 100. Percentages can be calculated by dividing any fractions that result in a decimal quotient and then multiplying by 100. This can be done by hand or esti... More »

Reverse percentage can be calculated by dividing a known amount by 1 minus the discount rate or 1 plus the tax rate. Such calculations are helpful in determining the original price of a sale item purchased or the pretax ... More »

Calculating percentages is found by dividing the part by the whole and multiplying the result by 100. For example, 17 is what percent of 68 can be found by dividing 17 by 68 which equals 0.25. Multiplying 0.25 by 100 equ... More »

No one person invented percentages. The concept developed throughout history. In Ancient Rome mathematical computation were expressed in fractions of 100. This concept later evolved into percentages. More »

Some simple way kids can figure out percentages are to relate basic fraction with percentages or use grid paper. Grid paper that is 10 by10 is useful for teaching younger students that a percentage is given as parts per ... More »

A calculator is always helpful when determining percentages, but you can easily compute percentages without a calculator. A pencil and paper might be helpful as you do this. More »