Answer:
Increase:
It will have increase when y>x
so, percentage of increase is
![=\frac{y-x}{x}\times 100](https://tex.z-dn.net/?f=%3D%5Cfrac%7By-x%7D%7Bx%7D%5Ctimes%20100)
Decrease:
It will have decrease when x>y
so, percentage of decrease is
![=\frac{x-y}{x}\times 100](https://tex.z-dn.net/?f=%3D%5Cfrac%7Bx-y%7D%7Bx%7D%5Ctimes%20100)
Step-by-step 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
![=\frac{y-x}{x}\times 100](https://tex.z-dn.net/?f=%3D%5Cfrac%7By-x%7D%7Bx%7D%5Ctimes%20100)
For example:
Initial value is 40
So, x=40
Final value is 50
so, y=50
now, we can find percentage in increase
![=\frac{50-40}{40}\times 100](https://tex.z-dn.net/?f=%3D%5Cfrac%7B50-40%7D%7B40%7D%5Ctimes%20100)
![=25](https://tex.z-dn.net/?f=%3D25)
Decrease:
It will have decrease when x>y
so, percentage of decrease is
![=\frac{x-y}{x}\times 100](https://tex.z-dn.net/?f=%3D%5Cfrac%7Bx-y%7D%7Bx%7D%5Ctimes%20100)
For example:
Initial value is 50
So, x=50
Final value is 40
so, y=40
now, we can find percentage in decrease
![=\frac{50-40}{40}\times 100](https://tex.z-dn.net/?f=%3D%5Cfrac%7B50-40%7D%7B40%7D%5Ctimes%20100)
![=25](https://tex.z-dn.net/?f=%3D25)