When we talk about percent change, we first need to know the difference between the two numbers. Let's find that:
[tex]15.60-11.70=3.90[/tex]
The difference is $3.90. So to find the percent change, we need to take the difference, and divide it by the original amount. In this case, the original amount is $15.60:
[tex] \frac{3.90}{15.60} =0.25[/tex]
This number, 0.25, is in decimal form. However, we know that in order to get this to percentage, we need to multiply by 100:
[tex]0.25*100=25[/tex]
This means that the total percent change is 25%.
