# 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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