Percentage Calculator
Calculate percentages quickly and understand exactly how the answer was calculated. Use MathSolve to find percentages, percentage increases, decreases, and percentage differences.
What is X% of Y?
Find a percentage of a number.
How was this calculated?
In simple terms:
What Percentage is X of Y?
Find what percentage one number represents of another number.
How was this calculated?
In simple terms:
Percentage Increase or Decrease
Find the percentage change between an original value and a new value.
How was this calculated?
In simple terms:
Percentage Difference
Compare two numbers using percentage difference.
How was this calculated?
In simple terms:
How to Calculate a Percentage
A percentage represents a number as a fraction of 100. The word “percent” means “per hundred.”
For example, 25% means 25 out of every 100, which can also be written as 0.25.
Convert 15% to a decimal:
15 ÷ 100 = 0.15
Multiply by 200:
0.15 × 200 = 30
Answer: 30
Where Are Percentages Used?
Percentages are used in many everyday situations, including:
- Shopping discounts
- Sales tax
- Tips
- Interest rates
- Grades and test scores
- Salary increases
- Price increases
- Investment returns
- Statistics
- Business calculations
Percentage Calculator FAQ
How do I calculate a percentage of a number?
Convert the percentage to a decimal by dividing it by 100, then multiply the decimal by the number. For example, 20% of 150 is 0.20 × 150 = 30.
What is 10% of 100?
10% of 100 is 10 because 10 ÷ 100 × 100 = 10.
How do I calculate percentage increase?
Subtract the original value from the new value, divide the difference by the original value, and multiply by 100.
What does percentage mean?
Percentage means “per hundred.” A percentage expresses a number as a part of 100.