In this video, we will be learning how to determine percent change.
Percent Change Formula:
For example:
The price of gas was originally $5. The new price for gas is $4. What is the percent change?
Substitute the givens
Simplify
Video-Lesson Transcript
In this video, we will be learning how to determine percent change.
Let’s go through percent increase or percent decrease.
We will use just one formula to compute the percent change:
For example:
The price of gas was originally . The price went down to
. What is the percent change?
Let’s use the formula to determine the percent change.
Which will be
Then divide by
the answer is
We have a decrease
Let’s have another one.
The price of gas was originally . The price went down to
. What is the percent change?
Let’s use the formula and substitute all the given values.
We’ll get
Since the answer is positive, it means it’s an increase.
Just a review, the percent change formula is
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