Frequently Asked Questions
What is a percentage and how is it calculated?
A percentage is a way of expressing a number as a fraction of 100. It's calculated by dividing the part by the whole and multiplying by 100. For example, if you have 25 out of 100 items, that's 25/100 × 100 = 25%.
How do I calculate percentage increase or decrease?
To calculate percentage change: ((New Value - Original Value) / Original Value) × 100. If the result is positive, it's an increase. If negative, it's a decrease.
Can I use this calculator for business and financial calculations?
Absolutely! Our calculator is perfect for business use including profit margin calculations, growth rate analysis, discount pricing, tax calculations, and financial reporting.
Is this percentage calculator accurate for large numbers?
Yes, our calculator handles both small and large numbers with high precision. It supports decimal places and can work with numbers in the millions or billions.
How do I calculate what percentage one number is of another?
Use our basic percentage calculator. Enter the smaller number as "Value" and the larger number as "Total". The result shows what percentage the first number represents of the second.
Can I calculate tips and discounts with this tool?
Yes! Use the discount calculator for shopping discounts, or the percentage of a number calculator for tip calculations. For example, to calculate a 15% tip on $50, enter 15% and $50.
Do you store my calculation data?
No, we don't store any of your calculation data. All calculations are performed locally in your browser, ensuring complete privacy and security.
What's the difference between percentage and percentile?
A percentage is a proportion out of 100, while a percentile indicates the value below which a certain percentage of data falls. For example, scoring in the 90th percentile means you scored better than 90% of test takers.