The Percentage Calculator is an online tool for solving percentage problems quickly and accurately. It can calculate a percentage of any number, determine what percentage one value is of another, measure percentage increase or decrease, adjust a value by a selected percentage, and find an original amount through reverse percentage calculations.
To use it, choose the calculation type that matches your requirement. Enter the requested values, select increase or decrease where applicable, and click Calculate. The answer appears instantly in the live preview with a summary, entered figures, and the formula used.
The calculator also includes Load Sample and Reset buttons for testing, along with a Copy Result option for sharing calculations. Users can zoom in, zoom out, or fit the preview to the available area. The completed calculation sheet can be printed on an A4 page, making the tool useful for students, teachers, shoppers, businesses, budgeting, reports, and everyday calculations.
Percentage Calculator
Calculate percentages, percentage change, increase, decrease, and reverse percentages.
Enter a percentage and a number to calculate the percentage amount.
Percentage Calculation
Percent of a Number
This calculation sheet was generated with the Percentage Calculator. Review the entered figures before using the result for financial, academic, business, or reporting purposes.
Frequently Asked Questions
What can this percentage calculator calculate?
It can find a percentage of a number, determine what percentage one value is of another, calculate percentage change, increase or decrease a value by a percentage, and find an original value from a final percentage-based amount.
How do I calculate a percentage of a number?
Select “Percent of a Number,” enter the percentage and the number, and click Calculate. The calculator multiplies the number by the percentage divided by 100.
How is percentage change calculated?
Percentage change is calculated by subtracting the old value from the new value, dividing the difference by the old value, and multiplying the result by 100.
Can the calculator show a percentage decrease?
Yes. Use the Increase / Decrease mode, choose Decrease, enter the starting value and the percentage, and the calculator will show both the amount reduced and the final value.
What is a reverse percentage calculation?
A reverse percentage calculation finds the original value before a known percentage increase or decrease was applied. Enter the final value, the percentage, and the adjustment type.
Can I print the result?
Yes. The Print button opens a clean A4 print view containing only the completed live preview sheet with its styling, values, formula, and summary.