Percentage Calculator
Calculate percentages for any scenario - increases, decreases, differences, and more. Perfect for discounts, tips, statistics, and financial calculations.
How to calculate average percentage?
20% of 100
Basic percentage
100 + 10%
Increase
100 - 10%
Decrease
80 → 100
Difference
Percentage Formulas
| Calculation Type | Formula | Example |
|---|---|---|
| Basic Percentage | (Percentage × Whole) ÷ 100 | 20% of 100 = (20 × 100) ÷ 100 = 20 |
| Percentage Increase | Original + (Original × Percentage ÷ 100) | 100 + 10% = 100 + (100 × 10 ÷ 100) = 110 |
| Percentage Decrease | Original - (Original × Percentage ÷ 100) | 100 - 10% = 100 - (100 × 10 ÷ 100) = 90 |
| Percentage Difference | |New - Original| ÷ Original × 100 | 80 → 100 = |100 - 80| ÷ 80 × 100 = 25% |
Future value calculator
Discounts & Sales
Calculate sale prices and discounts during shopping. For example, a $50 item with 20% off would be $40.
Tips & Gratuity
Calculate tips for services. A 15% tip on a $60 bill would be $9, making the total $69.
Financial Growth
Track investment growth. A $1,000 investment growing 7% annually becomes $1,070 after one year.
Weight Loss
Track fitness progress. Losing 10% of body weight from 200 lbs means losing 20 lbs.
Scientific Data
Analyze experimental results. A chemical reaction efficiency improving from 75% to 90% is a 20% increase.
Test Scores
Calculate grades. Scoring 45 out of 50 on a test is 90%.
Percentage Calculator Answers
What does the percentage calculator do?
The percentage calculator helps you find the percentage of a number, calculate percentage increase or decrease, and determine what percentage one number is of another.
Can it calculate percentage increase and decrease?
Yes. The calculator can determine both percentage increase and decrease between two values, useful for financial growth, discounts, and statistics.
How do I calculate what percentage one number is of another?
Enter the part and the whole values, and the calculator will compute the percentage that the part represents of the whole.
Is this tool useful for students and professionals?
Absolutely. It’s helpful for quick percentage calculations in academics, business, finance, and everyday math problems.