# How to Calculate Percent Change?

Whenever you see a sale price (or a price increase), you may want to know how much the price has changed. Knowing the percentage change can help you make an informed purchasing decision.

http://www.wikihow.com/Calculate-Percent-Change

## How to Calculate an Average Percent Change?

Subtract the old value from the new value, divide the result by the old value and then multiply this by 100. The result represents the average percent change from the new to the old value. This can...
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http://www.answerbag.com/q_view/1608126

## How to Calculate the Percent of Population Change?

Over time, the population of towns, cities, states, countries and the world changes. Based on previous growth rates, you can predict future growth rates. Predicting growth helps governments to anti...
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http://www.ehow.com/how_8087984_calculate-percent-population-change.html

## How to Calculate a 2 Percent Fall?

Being able to use percentages is a basic math skill. By being able to calculate a 2 percent fall, you can apply the calculation to all sorts of situations. For example, you can calculate how much y...
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http://www.ehow.com/how_8370710_calculate-2-percent-fall.html

## How to Calculate a 10 Percent Discount?

When stores have sales, they often advertise a general price reduction, such as 10 percent off everything in the store, rather than advertising the reduced price of each item. In order to calculate...
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http://www.ehow.com/how_6397158_calculate-10-percent-discount.html