🔢 Percentage Calculator
Calculate percentages instantly – Free, fast, and accurate
What is X% of Y?
Result:
0
Percentage Increase Calculator
New Value:
0
Increase Amount: 0
Percentage Decrease Calculator
New Value:
0
Decrease Amount: 0
Percentage Change Calculator
Percentage Change:
0%
Increase of 0
X is What % of Y?
Percentage:
0%
📚 About Percentages
What is a Percentage?
A percentage is a way to express a number as a fraction of 100. The word “percent” comes from the Latin “per centum,” meaning “by the hundred.” Percentages are used everywhere in daily life, from calculating discounts and tips to understanding statistics and financial data.
Common Uses
- Shopping: Calculate discounts and sales prices
- Finance: Interest rates, returns on investment
- Business: Growth rates, profit margins
- Education: Test scores and grades
- Health: Body fat percentage, nutrition labels
Quick Tips
Tip 1: To find 10% of any number, simply move the decimal point one place to the left. For example, 10% of 250 = 25.
Tip 2: To calculate 15% tip quickly, find 10% and add half of that. Example: 10% of $40 = $4, half is $2, so 15% = $6.
Tip 3: When comparing percentage increases, remember that the base matters. A 50% increase from 100 to 150 is not the same as a 50% decrease from 150 back to 100 (which would be 75).
Basic Formulas
Percentage of a number:
(Percentage ÷ 100) × Number
Percentage change:
((New Value – Old Value) ÷ Old Value) × 100
Find percentage:
(Part ÷ Whole) × 100
Why Use Our Calculator?
- ✅ Instant and accurate results
- ✅ Multiple calculation modes
- ✅ Mobile-friendly design
- ✅ No registration required
- ✅ Completely free to use