# Add a Percentage to a Number?

To calculate percentage, multiply the number by the percentage fraction. For example to calculate 9% of 25000, multiply 25000 by 9/100, that is, multiply 25000 by 0.09.
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 1. Find the decimal value of a given percentage by dividing the percentage by 100. For example, if we have 25 percent, 25/100 would equal 0.25. 2. Repeat Step 1 for the other percentage http://www.ehow.com/how_7830353_add-percentages-to...
 Attention Deficit Hyperactivity Disorder (ADHD) affects an estimated http://www.chacha.com/question/what-is-the-percent...
 It's highly variable, but here's an older study that can provide a decent estimate: http://www.emarketer.com/%28S%28... The real metric isn't just conversions, since you have to account http://www.quora.com/On-average-what-percentage-of...
To add percentages, you follow the same rules as adding two numbers. For instance, 25% + 25% would be equal to 50%. If decimals are used, follow the same principle.
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You add percentages the same way you do normal numbers. For example, 50% + 20% is equal to 70%. The same applies to percentages still in decimal form. ...
To calculate for reverse percentage, divide the percentage added to the original by 100. Add 1 to the percentage in decimal form. Divide the final amount by the ...
To calculate an,average percentage, you only need to do some simple math. First, add up the total number of percentages you need to find the average of. Then add ...