how do i calculate a percentage discount?
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['Subtract the post-discount price from the pre-discount price.', 'Divide this new number by the pre-discount price.', 'Multiply the resultant number by 100.', 'Be proud of your mathematical abilities.']
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Final Price: Thus, a product that normally costs $20 with a 10 percent discount will cost you $18.00, and you saved $2.00. You can also calculate how much you save by simply moving the period in 10.00 percent two spaces to the left, and then multiply the result by $20 as follows: $20 x . 10 = $2.00 savings.
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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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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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Thus, a product that normally costs $40 with a 20 percent discount will cost you $32.00, and you saved $8.00. You can also calculate how much you save by simply moving the period in 20.00 percent two spaces to the left, and then multiply the result by $40 as follows: $40 x . 20 = $8.00 savings.
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Thus, a product that normally costs $23 with a 30 percent discount will cost you $16.10, and you saved $6.90. You can also calculate how much you save by simply moving the period in 30.00 percent two spaces to the left, and then multiply the result by $23 as follows: $23 x . 30 = $6.90 savings.
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Get percentage discount. If you have a discounted price and an original price, and you want to know the discount as a percentage, you can calculate the percentage discount using a formula that divides the discounted price by the original price and then subtracts the result from one.
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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 of a specific number, you first convert the percentage number to a decimal. This process is the reverse of what you did earlier. You divide your percentage by 100. So, 40% would be 40 divided by 100 or .
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Thus, a product that normally costs $20 with a 40 percent discount will cost you $12.00, and you saved $8.00. You can also calculate how much you save by simply moving the period in 40.00 percent two spaces to the left, and then multiply the result by $20 as follows: $20 x . 40 = $8.00 savings.
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Thus, a product that normally costs $45 with a 18 percent discount will cost you $36.90, and you saved $8.10. You can also calculate how much you save by simply moving the period in 18.00 percent two spaces to the left, and then multiply the result by $45 as follows: $45 x . 18 = $8.10 savings.
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Thus, a product that normally costs $24 with a 5 percent discount will cost you $22.80, and you saved $1.20. You can also calculate how much you save by simply moving the period in 5.00 percent two spaces to the left, and then multiply the result by $24 as follows: $24 x . 05 = $1.20 savings.
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One of the easiest ways to determine a 10 percent discount is to divide the total sale price by 10 and then subtract that from the price. You can calculate this discount in your head. For a 20 percent discount, divide by ten and multiply the result by two.
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Thus, a product that normally costs $90 with a 45 percent discount will cost you $49.50, and you saved $40.50. You can also calculate how much you save by simply moving the period in 45.00 percent two spaces to the left, and then multiply the result by $90 as follows: $90 x . 45 = $40.50 savings.
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Thus, a product that normally costs $97 with a 50 percent discount will cost you $48.50, and you saved $48.50. You can also calculate how much you save by simply moving the period in 50.00 percent two spaces to the left, and then multiply the result by $97 as follows: $97 x . 50 = $48.50 savings.
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Thus, a product that normally costs $8 with a 40 percent discount will cost you $4.80, and you saved $3.20. You can also calculate how much you save by simply moving the period in 40.00 percent two spaces to the left, and then multiply the result by $8 as follows: $8 x . 40 = $3.20 savings.
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Remember the formula for finding the discount price of an item. Where S = sale price, r = discount percentage rate and p = original price, the discount formula is: S = p - rp.