Percentage Calculator: Percent, Ratio and Change Guide
A percentage calculator finds a percentage of a number, one value as a share of another, and the increase or decrease between two figures. It is useful for shopping discounts, salary raises, exam scores and commissions. Enter values in the matching boxes; every calculation runs directly in your browser. This guide explains how to choose the correct mode and interpret results. Results are for information only.
Step by step
- Choose the calculation type: percentage of a number, percentage share, or percentage change.
- For a percentage of a number, enter the base amount and the rate completely.
- For a share, enter part and whole in the correct order; reversing changes everything.
- For change, enter old and new values separately and confirm the starting point.
- Press calculate and review the amount, ratio and direction.
- Compare with a rough estimate and check separators.
Example scenario
A worker receives 18 percent extra on a 2,400 TL travel allowance. Entering 2,400 and 18 gives 432 TL because 2,400 times 0.18 equals 432. If a product rises from 800 TL to 1,000 TL, the increase is 200 TL and 200 divided by 800 equals 0.25, so 25 percent.
Check your result
Check plausibility: 18 percent of 2,400 should be near 432. Confirm increases appear positive. Small rounding differences are normal; rely on bank receipts for critical payments.
Frequently asked questions
Percent vs percentage points?
A percent is a share of a whole: 18 percent of 2,400 is 432. A percentage point is the absolute gap between two rates.
How to find a percentage of a number?
Convert the rate to a decimal: 18 percent becomes 0.18. Then 2,400 times 0.18 equals 432 TL.
Interpret increase or decrease?
New larger than old gives positive (growth). Checking the sign prevents mistakes.
Use for commissions?
Yes: 2 percent on 50,000 TL is 1,000 TL. Always check the contract rate first.
Result looks wrong?
Confirm the mode and value order first, then check decimal separators.
Open the tool: Percentage Calculator →
Keep an original copy before processing your file. Examples are illustrative; results depend on your document.