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Percentages are numbers or ratios that are expressed as a fraction of 100.
Percentages are often represented by the percent sign, %. Here are some ways to calculate percentages: To find a percentage of a number: Multiply the number by the decimal form of the percentage. For example, to find 30% of 40, multiply (30/100)(40) = 0.3 x 40 = 12. To convert a decimal to a percentage: Multiply the decimal by 100. For example, .87 x 100 = 87%. To calculate a percentage: Use the formula Percentage = (Value/Total Value) x 100.
For example, if there are 10 dogs in a group of 40 animals, the percentage of dogs is: Percentage of dogs = 10/40 x 100 = 25%.
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