how to calculate a percentage off of something?
166308
The basic way to calculate a discount is to multiply the original price by the decimal form of the percentage. To calculate the sale price of an item, subtract the discount from the original price. You can do this using a calculator, or you can round the price and estimate the discount in your head.
261416
Step 1) Get the percentage of the original number. 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.
41263
['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.']
79467
['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.']
616959
The first step of the primary method is to use the formula S = p - rp, where S = sale price, r = discount percentage rate, and p = the original price. Using the alternative method, you look at the remaining percent of the price you'd be paying; for example, 90% is left if 10% is taken off.
375017
In this example, that's $10 divided by the original $50 price tag, or 0.2. Multiply the decimal by 100 (or move the decimal point over two spaces to the right) to convert it to a percentage. In this example, that's 0.2 multiplied by 100, or 20 percent. This means you saved 20 percent on the purchase of the sweater.
40589
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.
1374350
['As a proper fraction. (numerator smaller than denominator): 99/100 = 99/100', 'As a decimal number: 99/100 = 0.99.', 'As a percentage: 99/100 = 99%']
465329
To convert 25 percent to a decimal number, so that you can multiply it with any number to subtract 25 percent from it, you deduct 25 from 100, then divide that result by 100. Here is the math to illustrate. Now you can multiply 0.75 by any number that you want to subtract 25 percent from.
1050262
["You divide the number you you want to get the percentage for by the number you're getting the percentage of, then multiply it by 100 and do a Math. ... ", 'var wholePercent = Math.floor(3/9*100);', 'To turn it into a function:', 'function getWholePercent(percentFor,percentOf) ... ', 'call it like this:', 'var wholePercent=getWholePercent(3,9);']
127644
Calculate Discount from List Price and Sale Price. The discount is list price minus the sale price then divided by the list price and multiplied by 100 to get a percentage.
8957
['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.']
137645
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.
720937
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.
1404613
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). To subtract 30 percent, multiply the number by 70 percent (0.7).
22262
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.
1270512
['Percentage amount = Rate x Base.', 'Rate = Percentage amount ÷ Base.', 'Base = Percentage amount ÷ Rate.', 'Percent increase/decrease = Difference between two figures ÷ Previous figure.']