Percentage Increase/Decrease Calculator
Free percentage increase and decrease calculator. Find how much a value has gone up or down.
Formula: ((New - Old) / Old) × 100
What Is This Calculator?
This calculator determines whether a value has increased or decreased and by what percentage. It clearly labels the result as an increase (positive) or decrease (negative), making it easy to communicate changes to stakeholders.
How to Calculate
To calculate: 1) Enter the original value. 2) Enter the new value. 3) The calculator subtracts old from new, divides by old, and multiplies by 100. Positive result = increase. Negative result = decrease. Formula: % Change = (New − Old) / Old × 100.
Examples
Example: Price went from $80 to $100. Change = (100 − 80) / 80 × 100 = 25% increase. If price dropped to $60: (60 − 80) / 80 × 100 = −25% decrease.
Recommended Tools
Financial dashboards and BI tools calculate percentage changes automatically for period-over-period comparisons.
Get Calculator Tips Weekly
Free tips, new calculators, and practical business math. No spam.
People Also Calculated
Percentage Change Calculator
Free percentage change calculator. Calculate the percentage increase or decrease between two values.
Growth Rate Calculator
Free growth rate calculator. Calculate month-over-month or year-over-year growth rates.
Average Calculator
Free average calculator. Calculate mean, median, and mode from a set of numbers.