Percent of Change
See how to find the percent of change.
3 examples and their solutions.
Percent of Change
Formula
(%) = (final) - (original)(original)⋅100
Example
15 → 21
Percent of change?
Solution Percent of change?
15 → 21
(%) = 21 - 1515⋅100
= 63⋅20
= 2⋅20
= 40%
40$ increase
(%) = 21 - 1515⋅100
= 63⋅20
= 2⋅20
= 40%
40$ increase
Close
Example
25 → 22
Percent of change?
Solution Percent of change?
25 → 22
(%) = 22 - 2525⋅100
= -3⋅4
= -12%
12% decrease
(%) = 22 - 2525⋅100
= -3⋅4
= -12%
12% decrease
Close
Example
8 → x, 25% increase
Solution 8 → x
x - 88⋅100 = 25
x - 88⋅4 = 1 - [1]
x - 82 = 1
x - 8 = 2
x = 10
x - 88⋅100 = 25
x - 88⋅4 = 1 - [1]
x - 82 = 1
x - 8 = 2
x = 10
[1]
÷25 both sides.
Linear Equation (One Variable)
Linear Equation (One Variable)
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