how to calculate the percentage rate?
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The percent rate is calculated by dividing the new value by the original value and multiplying by 100%. The percentage value or new value is calculated by multiplying the original value by the percent rate and dividing by 100%.
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['Convert the problem to an equation using the percentage formula: Y/X = P%', 'X is 60, Y is 12, so the equation is 12/60 = P%', 'Do the math: 12/60 = 0.20.', 'Important! ... ', 'Converting 0.20 to a percent: 0.20 * 100 = 20%', 'So 20% of 60 is 12.']
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To calculate the percentage increase: Then: divide the increase by the original number and multiply the answer by 100. % increase = Increase ÷ Original Number × 100.
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The math to determine a percentage is to divide the numerator (the number on top of the fraction) by the denominator (the number on the bottom of the fraction), then multiply the answer by 100. For example, the fraction 6/12 turns into a decimal like this: 6 divided by 12 (which equals 0.5) times 100 equals 50 percent.
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['Example:', 'A. Divide the mark given for each small assignment by the possible mark for each small assignment.', 'B. Add the marks given for each assignment. Then add the possible marks given for each assignment. Divide the given mark by the possible mark. ... ', 'C. Multiply the decimal by 100 to calculate the percentage.']
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(b) Divide by the initial price ($60) to get the total percentage increase. (c) Divide by the number of years, [12 = 2001-1989]. And (d) multiply by 100% to get the annual percentage rate of increase. The result would be 12.50 percent per year.
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['Convert the problem to an equation using the percentage formula: P% * X = Y.', 'P is 10%, X is 150, so the equation is 10% * 150 = Y.', 'Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10.']
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If you have to turn a percentage into a decimal, just divide by 100. For example, 25% = 25/100 = 0.25. To change a decimal into a percentage, multiply by 100. So 0.3 = 0.3 × 100 =30% .
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About This Article To calculate percentages, start by writing the number you want to turn into a percentage over the total value so you end up with a fraction. Then, turn the fraction into a decimal by dividing the top number by the bottom number. Finally, multiply the decimal by 100 to find the percentage.
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['Add up all federal, state, and local tax rates.', 'Subtract the total tax rates from the number 1. 1 – tax = net percent.', 'Divide the net payment by the net percent. net payment / net percent = gross payment.', 'Check your answer by calculating gross payment to net payment.']
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The percent rate is calculated by dividing the new value by the original value and multiplying by 100%.
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['Divide the larger number by the original number. ... ', 'Subtract one from the result of the division.', 'Multiply this new number by 100. ... ', 'Divide the percentage change by the period of time between the two numbers.', 'You now have the percentage increase over time.']
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['The rate is usually given as a percent.', 'To find the discount, multiply the rate by the original price.', 'To find the sale price, subtract the discount from original price.']
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To calculate the percentage increase: First: work out the difference (increase) between the two numbers you are comparing. Then: divide the increase by the original number and multiply the answer by 100.
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['Either add/subtract the percentage given in the problem from 100% to determine what percentage we have.', 'Find 1% by dividing by percentage found in previous step.', 'Find 100% (original amount) by multiplying your answer in step 2 by 100.']
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Generally, the way to figure out any percentage is to multiply the number of items in question, or X, by the decimal form of the percent. To figure out the decimal form of a percent, simply move the decimal two places to the left. For example, the decimal form of 10 percent is 0.1.
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To calculate the percentage, multiply this fraction by 100 and add a percent sign. 100 * numerator / denominator = percentage . In our example it's 100 * 2/5 = 100 * 0.4 = 40 .