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Percentage Calculator
Master Percentage Suite
Omnichannel ratio engine with deep-variance intelligence and scalar mapping
Proportion
Ratio Finder
Variance
%
Extracted Functional Mass
100
Occupancy Scale
20%
Logic: V = (P/100) * B
Calculation: (20 / 100) * 500 = 100
Calculation: (20 / 100) * 500 = 100
Relative Density %
25%
Logic: P = (T / G) * 100
Calculation: (50 / 200) * 100 = 25%
Calculation: (50 / 200) * 100 = 25%
Delta (Variance)
+50%
GROWTH DETECTED
Logic: Ξ = ((C - H) / H) * 100
Calculation: ((150 - 100) / 100) * 100 = 50%
Calculation: ((150 - 100) / 100) * 100 = 50%
About the Percentage Calculator
Percentages appear everywhere: discounts, exam marks, tax, tips and growth rates. This calculator handles the three most common questions: what is X percent of a number, what percent one number is of another, and by what percent a value has changed.
How to use the Percentage Calculator
- To find a percentage of a number, enter the percentage and the number it applies to.
- To find what percent one number is of another, enter the part and the whole.
- To find a percentage change, enter the old value and the new value.
- Press Calculate in the section you are using.
Formula and method
Percentage of a number: Result = (Percent Γ· 100) Γ Number
Percent one number is of another: Percent = (Part Γ· Whole) Γ 100
Percentage change: Change % = ((New β Old) Γ· Old) Γ 100
Worked example
15% of 240 = 0.15 Γ 240 = 36. 45 is (45 Γ· 240) Γ 100 = 18.75% of 240. A price rising from 80 to 100 is a change of (100 β 80) Γ· 80 Γ 100 = +25%.
Tips
- A percentage increase followed by the same percentage decrease does not return you to the start: +25% then β25% ends at 93.75% of the original.
- Percentage points and percent are different. Going from 10% to 12% is a rise of 2 percentage points but 20 percent.
- To find the original price after a discount, divide by (1 β discount).
Frequently Asked Questions
Find 10% by moving the decimal one place, then build up. For 15% of 240: 10% is 24, 5% is 12, so 15% is 36.
Subtract the old value from the new value, divide by the old value and multiply by 100.