Percentage Calculator
All-in-one percentage calculations.
Why Use This Calculator?
Perform quick and accurate percentage calculations. Find percentages of numbers, calculate percentage increases or decreases, and determine the percentage ratio between two values.
Recommended Workflow
Select Calculation Type
Choose whether you want to find a percentage of a number, a percentage change, or what percentage one number is of another.
Enter Values
Input your numbers into the respective fields.
Get Result
Instantly view the calculated percentage.
Common Mistakes to Avoid
- •Confusing "percentage of" with "percentage off" (discount).
- •Calculating a percentage increase using the new number instead of the original number as the base.
What to do next?
Real-World Examples
Calculating Software Agency Margins
Inputs (The Math)
- Total Revenue$100,000
- Total Expenses$75,000
Outputs (The Result)
- Net Profit$25,000
- Profit Margin25%
Why it works this way
The agency keeps 25 cents of pure profit for every dollar it earns in revenue. The remaining 75 cents goes toward paying employees, rent, and software licenses.
- Expenses include all operating costs and taxes.
Retail Clothing Markup
Inputs (The Math)
- Wholesale Cost$20
- Markup Percentage150%
Outputs (The Result)
- Markup Amount$30
- Final Retail Price$50
- Gross Margin60%
Why it works this way
Retailers often use high markups to cover the costs of physical storefronts and staff. Notice that applying a massive 150% markup to the cost only results in a 60% gross margin on the revenue.
- Does not account for unsold inventory or discounts.
Frequently Asked Questions
How do I calculate 20% of 80?
To find 20% of 80, you multiply 80 by 0.20 (or 20/100), which equals exactly 16.
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