how to work out percentage reduction?
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To calculate percentage decrease: First: work out the difference (decrease) between the two numbers you are comparing. Then: divide the decrease by the original number and multiply the answer by 100. If your answer is a negative number, then this is a percentage increase.
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['Convert the problem to an equation using the percentage formula: Y/P% = X.', 'Y is 25, P% is 20, so the equation is 25/20% = X.', 'Convert the percentage to a decimal by dividing by 100.', 'Converting 20% to a decimal: 20/100 = 0.20.']
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Then we need to change this fraction into a decimal, and then into a percent. To find a percent increase or decrease, all we need to do is take the difference in amount and divide it by the original amount, which gives us a decimal. Then we multiply this by 100, which turns the decimal into a percent.
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Divide the absolute change by the initial value to calculate the rate of change. In the example, 50 divided by 100 calculates a 0.5 rate of change. 5. Multiply the rate of change by 100 to convert it to a percent change.
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To subtract any percentage from a number, simply multiply that number by the percentage you want to remain. In other words, multiply by 100 percent minus the percentage you want to subtract, in decimal form. To subtract 20 percent, multiply by 80 percent (0.8).
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['Subtract the discount from 100 to get the percentage of the original price.', 'Multiply the final price by 100.', 'Divide by the percentage in Step One.']
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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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First: work out the difference (decrease) between the two numbers you are comparing. Then: divide the decrease by the original number and multiply the answer by 100. If your answer is a negative number then this is a percentage increase.
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Calculating percentages The basic formula for calculating a percentage is =part/total. Say you want to reduce a particular amount by 25%, like when you're trying to apply a discount. Here, the formula will be: =Price*1-Discount %. (Think of the “1” as a stand-in for 100%.)
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Now, you can divide 12 by 60 . After this division, you get 0.2 . You can check your result using the percentage change calculator.
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To work out a price excluding the standard rate of VAT (20%) divide the price including VAT by 1.2. To work out a price excluding the reduced rate of VAT (5%) divide the price including VAT by 1.05.
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The percentage change can be calculated to find out the profit or loss an item has made. Percentage change is calculated by dividing the difference between the two amounts by the original amount.
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Tip: You can also multiply the column to subtract a percentage. To subtract 15%, add a negative sign in front of the percentage, and subtract the percentage from 1, using the formula =1-n%, where n is the percentage. So to subtract 15% use =1-15% as the formula.
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To determine your percentage of weight loss, divide the number of pounds you lost by your starting weight. Multiply your answer by 100 to arrive at the percentage.
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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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First: work out the difference (decrease) between the two numbers you are comparing. Then: divide the decrease by the original number and multiply the answer by 100. If your answer is a negative number, then this is a percentage increase.
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Simply subtract the before value from the after value; then divide by the before value. Multiply the result by 100. Add a % sign and that is your percentage change.