Question

How do you determine whether you are finding a percent of increase or a percent of decrease between two values? Explain.

Answer 1

Increase:

It will have increase when y>x

so, percentage of increase is

`=(y-x)/(x)* 100`

Decrease:

It will have decrease when x>y

so, percentage of decrease is

`=(x-y)/(x)* 100`

Explanation:

Let's assume initial value as x

assume final value as y

Increase:

It will have increase when y>x

so, percentage of increase is

`=(y-x)/(x)* 100`

For example:

Initial value is 40

So, x=40

Final value is 50

so, y=50

now, we can find percentage in increase

`=(50-40)/(40)* 100`

`=25`

Decrease:

It will have decrease when x>y

so, percentage of decrease is

`=(x-y)/(x)* 100`

For example:

Initial value is 50

So, x=50

Final value is 40

so, y=40

now, we can find percentage in decrease

`=(50-40)/(40)* 100`

`=25`