How to find a Percentage of a Number



How to find a percentage is a very recurring question. This page explains a method to figure out the percentage of a number when using a calculator that is missing the percent key.

What is a percentage?

A percentage is a proportion between two quantities expressed in hundredths. It is often used to define a portion as a fraction of a whole. It's widely used in statistics, and finance to define probability, rate of return etc.

How to find a percentage of a number

Multiply the number by the percentage fraction. For example to calculate 9% of 25000, multiply 25000 by 9/100, that is, multiply 25000 by 0.09.

How to add or subtract percentages

If your calculator does not have a percent key and you want to add a percentage to a number multiply that number by 1 plus the percentage fraction. For example 25000+9% = 25000 x 1.09 = 27250. To subtract 9 percent multiply the number by 1 minus the percentage fraction. Example: 25000 - 9% = 25000 x 0.91 = 22750.


Try it out online

Try a virtual calculator by selecting a simple or a paper roll calculator from the icons below. Just click on the calculator of your choice. Alternatively, you can try novi-zagreb's percentage calculator.

Simple Virtual Calculator Roll Paper Calculator





Another Calc

centimeter inches converter calculator to simplify fractions convert feet and inches to square metres celsius to fahrenheit formula least to greatest decimals calculator converting celsius to kelvins decimal to fraction convert millimeter conversion to inch maximum common divisor inches to metric conversion chart 1.5 inch to cm converter convert sqm to sq feet convertor cm inch 36mm converted to inches online scientific calculator ti convert m2 to squares box and whisker plot diagram find the gcd calculator what is the freezing point in fahrenheit inches to cms convertor how many inches 60cm a kilogram is equal to how many grams 500 micrograms equals how many milligrams metre to ft conversion convert kg to metric tonnes how many inches in 2.54 cm how to convert inches to meters squared how to subtract a percentage from a whole number mean average deviation calculator convert grain to mg multiple box and whisker plot maker