Percentage Calculator
Calculate percentage change, differences, and more.
What is
% of
Percentage Increase
50%
150 is a 50% increase from 100.
How To Use Percentage Calculator?
1
Select Your Task
Choose between calculating a percentage change (increase/decrease) or a basic percentage of a total.
2
Enter Your Numbers
Provide the initial and final values, or the percentage and total amount you want to calculate.
3
Get Instant Math
Our calculator provides the result, the type of change, and a clear descriptive sentence explaining the math.
Key Features
Growth Tracking
Perfect for tracking business growth, stock market changes, or weight loss progress over time.
Precise Logic
Handles positive and negative changes with absolute precision, identifying increases versus decreases automatically.
No Server Calls
Perform all your sensitive data calculations locally. No data is ever transmitted or stored on any server.
Frequently Asked Questions
How is percentage change calculated?
The formula is: ((New Value - Old Value) / |Old Value|) * 100. This gives you the relative change between the two numbers.
What is a 20% increase on 100?
A 20% increase on 100 is 120. You calculate this by adding 20% of 100 (which is 20) to the original 100.
Is this useful for sales?
Absolutely! Use the basic mode to find out how much you save or use change mode to track year-over-year sales performance.