Math
Percent change.
Definition
A measure of how much a quantity has increased or decreased relative to its original value, expressed as a percentage. It tells you the relative size of a change.
Examples
Real-world.
- 1 A shirt price dropping from $40 to $30 is a 25% decrease
- 2 A stock going from $50 to $65 is a 30% increase
- 3 Population growing from 10,000 to 12,500 is a 25% increase
Key Fact
Percent change = ((new - original) / original) × 100%