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# How do you subtract a percentage from a number?

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A percentage is subtracted from a number by calculating the percentage in relation to that number and then performing a basic subtraction function. For example, to calculate 200 minus 70 percent, a person must first know that 70 percent of 200 is 140. Then, 140 is subtracted from 200 to get the answer, which is 60.

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Before performing the subtraction step, individuals must convert the percentage to a relevant number. First, a person moves the decimal point to the left two places, converting the percentage figure to a number. Thus, 70 percent becomes 0.70. The original number is then multiplied by the percent number: In the example, 200 times 0.70 equals 140.

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## Related Questions

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The percentage of a number is found by multiplying the percent value by the base to get the percent amount, according to the Monterey Institute of Technology and Education. The base is the whole number and the percentage is some portion of it.

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To turn a number into its equivalent percentage, a person should move the decimal point two places to the right and then add the percent sign. For example, to turn the number 7 into a percentage, a person would move the decimal point two places to the right, which requires the addition of two 0s after the 7, and the percentage is expressed as 700 percent. In the case of .35, moving the decimal point two places to the right expresses the number in its percentage form as 35 percent.

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Subtracting decimals involves writing the two decimals one below the other and making sure that the decimal points line up before subtracting in the normal manner. However, the larger decimal should be placed above the smaller one. Similarly, if the two decimals do not have the same length, then add zeroes before subtracting them.