# How do you find the percent change if original: $3.78 and new: $2.50?

##### 1 Answer

Full 'teach in' given about percentages

#### Explanation:

In percentage the symbol % may be viewed as a unit of measurement that is worth

As and example

In this type of question it is usual to express the change using the original value is the reference point. Expressed as a fraction we have:

If changed value - original value is negative then it indicates a reduction. As is the case in this question.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

By the way; like in numbers the $ symbols cancel out in the same way numbers do. This is a useful trick when doing higher mathematics or physics

So we have

..............................................................................................

Remember that