# How to Calculate an Additional Percentage?

Adding on an extra percentage rather than a raw amount helps to measure the increase in relation to the original amount. For example, you might want to calculate the increase as a percentage of wha...
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http://www.ehow.com/how_8352820_calculate-additional-percentage.html

## How to Calculate Reverse Percentage?

If you have a starting amount and you want to add a percentage, you can simply multiply the percent by the original amount to find the amount that gets added. This, for example, would occur if you ...
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http://www.ehow.com/how_8439683_calculate-reverse-percentage.html

## How to Calculate the Percentage in Bar Graphs?

Bar graphs are one way to visually represent data. A bar graph uses columns of varying sizes to show different amounts of data. However, the bar graph only shows the raw data amounts. For example, ...
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http://www.ehow.com/how_8435864_calculate-percentage-bar-graphs.html

## How to Calculate Slugging Percentage?

A slugging percentage is a baseball statistic that is similar to a batting average. While batting average is used to measure the percentage of at-bat opportunities that result in a hit, slugging pe...
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http://www.wikihow.com/Calculate-Slugging-Percentage

## How to Calculate Grading Percentage?

When you are grading tests for your students, you should put the grading percentages on the test. The grading percentage tells the students the percent of points he received for getting a correct a...
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http://www.ehow.com/how_8140416_calculate-grading-percentage.html