Percentage Calculator
Calculate percentages, percentage change, increase, decrease, and fraction conversions.
Percentage Calculator
Percentage Calculator
X% of Y, change, increase, decrease — all modes
Result
Smart Insights
Personalized takeaways from your numbers.
Real-Life Examples
Basic percentage
20% markup on 500
The Formula Behind It
Percentage = (Part / Whole) × 100Variables
- Percentage = (Part / Whole) × 100
About Percentage Calculator
Calculate percentages, percentage change, increase, decrease, and fraction conversions.
Frequently Asked Questions
How do I calculate a percentage?
Divide the part by the whole and multiply by 100. Example — 25/200 × 100 = 12.5%.
How to calculate percentage increase?
((New Value - Old Value) / Old Value) × 100 gives the percentage increase.
How to calculate percentage decrease?
((Old Value - New Value) / Old Value) × 100 gives the percentage decrease.
How to find what percent one number is of another?
Divide the first number by the second and multiply by 100.
How to add a percentage to a number?
Multiply the number by (1 + percentage/100). Example — 200 + 15% = 200 × 1.15 = 230.
How to subtract a percentage from a number?
Multiply the number by (1 - percentage/100). Example — 200 - 15% = 200 × 0.85 = 170.
What is percentage point vs percent?
A percentage point is the absolute difference between percentages. 10% to 15% is a 5 point increase but 50% relative increase.
How to convert fraction to percentage?
Divide numerator by denominator and multiply by 100. 3/4 = 0.75 × 100 = 75%.
How to convert percentage to decimal?
Divide by 100. 45% = 0.45.
What is reverse percentage?
Finding the original amount before a percentage was applied. If 80 is 80% of X, then X = 80/0.80 = 100.