Percent of Change
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Algebra  Percent Change
by
AJ Speller
Key Questions

If
#x# is some changing quantity, and#Delta x# be the change in#x# value, then the percentage change can be found by#{Delta x}/x times 100#
Example
What is the percentage change (discount) of $12 discount on $300 item?
#{12}/{300} times 100=4%# discount
I hope that this was helpful.

The percentage change formula is:
#(X_2 / X_1  1) * 100# where
#X_1# is the original value and#X_2# is the final value.Example:
If Google's stock price increases from $500 to $575, it has increased by 15%.
#(575 / 500  1) * 100 = 15%# 
The formula for calculating the percent change in a value between two points in time is:
#p = (N  O)/O * 100# Where:
#p# is the percent change#N# is the New Value#O# is the Old Value 
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Linear Equations

1OneStep Equations and Inverse Operations

2Applications of OneStep Equations

3TwoStep Equations and Properties of Equality

4MultiStep Equations with Like Terms

5Distributive Property for MultiStep Equations

6Equations with Variables on Both Sides

7Equations with Ratios and Proportions

8Scale and Indirect Measurement Applications

9Conversion of Decimals, Fractions, and Percent

10Percent Equations

11Percent of Change

12Formulas for Problem Solving