how to work out percentages basic?
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You divide your percentage by 100. So, 40% would be 40 divided by 100 or . 40. Once you have the decimal version of your percentage, simply multiply it by the given number.
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If the percentage is an increase then add it to 100, if it is a decrease then subtract it from 100. Step 2) Divide the percentage by 100 to convert it to a decimal. Step 3) Divide the final number by the decimal to get back to the original number.
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1. How to calculate percentage of a number. Use the percentage formula: P% * X = Y.
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To determine totals from a percent in the future, multiply the given percentage value by 100 and divide that product by the percent. This method works in any instance where a percentage and its value are given. For example, when 2 percent = 80, multiply 80 by 100 and divide by 2 to reach 4000.
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To find 1% of something (1/100 of something), divide by 100. Remember how to divide by 100 mentally: Just move the decimal point two places to the left. For example, 1% of 540 is 5.4.
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To determine X is what percent of Y , divide X by Y and multiply the result by 100 to get the percentage.
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25/75 = . 33, or a 33% decrease. In order to figure a percentage increase of anything, multiply the number by the percentage. For example if you have a number of 100 and you wish to increase it by 50%, multiply 100 by 1.50 and get the result of 150.
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['To find 5%, find 10% and divide it in two.', 'To find 15%, find 10%, then add 5%.', 'To find 20%, find 10% and double it.', 'To find 25%, find 50% and then halve it.', 'To find 60%, find 50% and add 10%.', 'To find 75%, find 50% and add 25%.', '... and so on.']
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['Step 1: Write down the percent divided by 100 like this: percent 100.', 'Step 2: If the percent is not a whole number, then multiply both top and bottom by 10 for every number after the decimal point. ... ', 'Step 3: Simplify (or reduce) the fraction.']
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Learning how to calculate the percentage of one number vs. another number is easy. If you want to know what percent A is of B, you simple divide A by B, then take that number and move the decimal place two spaces to the right. That's your percentage!
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Align the decimal points in each number, then subtract as usual. Drop the decimal point down into your answer. Convert back into a percentage. To do this, move the decimal place back two places to the right.
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For example, if 20 percent is the number, divide 20 by 100 to get the decimal version of 0.20. Then use that number to calculate the percentage value. For example, if you want to determine what 20 percent of your total income of $1,500 is, multiply 1,500 by . 20 to get 300.
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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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['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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Percentage Calculator How to find 2.5% of a number? Take the number and multiple it by 2.5. Then multiply that by .
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['90% of a quantity. First find 10% of the quantity and then subtract that 10% from 100% of it.', '25% of a quantity. 25% is the same as 1/4. So to find 25% of a quantity, divide it by 4.', '12% of a quantity. First find 10% of it. ... ', '75% of a quantity. 75% is 3/4.']
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['12/5 =', '12 ÷ 5 =', '2.4 =', '2.4 × 100/100 =', '2.4 × 100% =']