Home - percentagecalculatorusa.com

Percentage Calculator

Enter the number: Enter the percentage:

Example: 25% of 200 is 50

Enter the number: Enter the percentage:

Example: 100 + 10% is 110

Enter the number: Enter the percentage:

Example: 100 – 10% is 90

Value (part): Total Value:

Example: 25 is 25% of 100

Initial value: Final value:

Example: From 100 to 150 there is a 50% increase

Final value: Percentage increase:

Example: If 100 has grown by 25%, before growing it was 80

Final value: Percentage decrease:

Example: If 100 has decreased by 25%, before decreasing it was 133.33

Initial value: Final value:

Example: From 100 to 130 there is a 30% increase

Value: Percentage increase:

Example: If 100 grows by 25% becomes 125

Value: Percentage decrease:

Example: If 100 decreases by 25% becomes 75

Visit my Substack

Frequently Asked Questions

Q1. What is a percentage?
A percentage is a way of expressing a number as a fraction of 100. It shows parts per hundred and is denoted by the “%” symbol. For example, 25% means 25 parts out of 100. This simple concept is used everywhere—from calculating discounts to interpreting statistics.

Q2. How do I convert between percentages and decimals?

To convert a percentage to a decimal, divide by 100 (e.g., 40% becomes 0.40).
To convert a decimal to a percentage, multiply by 100 (e.g., 0.75 becomes 75%).
This conversion is useful when performing calculations and understanding data.
Q3. Can percentages be more than 100%?
Yes, percentages can exceed 100% when the part is greater than the whole. For example, if a company’s revenue grows from $100 to $250, the increase is 150% because the new value is 150% more than the original.
Q4. Why are percentages important?
Percentages provide a standardized method to compare numbers and express change. They are used in finance (e.g., interest rates, profit margins), retail (discounts and sales tax), and many other fields to simplify complex comparisons and support better decision-making.