# Percentage Change Calculator | Increase or Decrease

### What is a Percentage Change?

Percentage change is the difference between two numbers divided by the original value, multiplied by 100. A positive percentage change indicates that an increase occurred. A negative percentage change indicates that a decrease occurred. For example, if one person's salary increased from \$5000 to \$6000 in 1 year, then their salary increased by 20%.

The percentage change formula is a great tool to use when it comes to figuring out how much change has happened in a particular situation. The formula can be used to solve for an unknown value, including the initial value or the final value. It can also be used to determine the percent difference between two numbers or two variables.

The formula for calculating percentage change is very simple. It's just the difference between the new value and the old value, divided by the old value, multiplied by 100. For example, if a store had \$550 in its till on Monday and then received an additional \$150 on Tuesday to have a total of \$700, the percentage change would be 27.27%.