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To find a percentage increase, divide the difference between the new and old value by the old value, explains TutorVista.com. The result is then multiplied by 100 to give the percentage.

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Percentages are calculated by finding what portion a fractional amount takes up out of 100. By comparing a fractional amount to x/100, a percentage can be found.

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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 estimated mentally in under a minute in many cases. Us...

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To calculate a percentage, simply divide one number into the other and multiply by 100. The order of division is important, and is determined by the wording of the question.

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Calculate the percentage difference of two numbers by dividing the difference of the numbers by their average. Multiply this answer by 100 to determine the percentage difference.

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Percentage calculations come into play in many real-world situations, such as determining how much to tip in a restaurant and figuring out the discounted prices of clothing. Here's how to do these calculations.

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Jari Jokinen's and the Math Easy Solutions percentage calculators both allow a user to find percentages by entering values into common percentage verbiage used in word problems. The Math Is Fun percentage calculator allows someone to compare two numbers percentage-wise.