Question

What is the hardest part of finding percent change and why is it the hardest?

Answer 1

It isn't necessarily the hardest to find percent change, it's just a bit lengthy, but it's nothing compared to complex problems you'll face later on in higher standards.

For any two values of a certain object, you find the loss or the profit by Subtracting the CP from the SP, if you get your value in positive, then its profit, and if in negative, then its a loss.

Now, to find the percentage of loss, you have to take your loss/profit, and divide it by your CP

So, $\frac{PROFIT}{CP}$

This will give you the fraction of profit or loss

So if you take this fraction and multiply it by 100, you'll get the loss/profit %

Hope this helped!