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Tool to convert percentages/ratio/fractions. Percentage calculation consists in writing a number via a fraction of 100, using the sign %.

Answers to Questions

How to convert a fraction into a percentage?

A percentage is ratio for 100 items. Technically it is a transformed fraction with the denominator 100 (one hundred). To convert a fraction to a percentage multiply the numerator and the denominator by a factor in order to have the denominator equals to 100.

Example: 3/4 = (3*25)/(4*25) = 75/100 = 75%

How to convert a percentage to a fraction?

A percentage is already a fraction (over 100), write this proportion in lowest term.

Example: 25% = 25/100 = 1/4

How to convert a percentage into a decimal number?

A percentage is a fraction and a fraction is a number, so converting a percentage to a number is making the corresponding division.

Example: If 25% of X = 100, Then X = ? (The answer is 400)

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Source code

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