Percentage Calculator
Calculate percentages instantly. Find a percentage of a number, determine what percent one number is of another, or calculate percentage increase and decrease.
What is X% of Y?
Enter a percentage and a number to calculate the percentage value.
X is What Percentage of Y?
Use this calculator to find what percentage one number represents of another number.
Percentage Increase or Decrease
Compare an original value with a new value to calculate the percentage change.
VAT and Sales Tax Calculator
Add tax to a price, or find the price before tax from a price that already includes it.
Preset rates are the standard rates checked in October 2026. Some goods and services use lower or zero rates, and Kuwait and Qatar have no VAT.
Free Online Percentage Calculator
Utivaro's Percentage Calculator helps you solve common percentage problems quickly without doing the formulas manually.
You can calculate a percentage of a number, find what percentage one value is of another, and measure percentage increases or decreases.
How to Calculate a Percentage of a Number
To find a percentage of a number, multiply the number by the percentage and divide the result by 100.
The formula is:
Percentage value = Number × Percentage ÷ 100
For example, to find 25% of 200:
200 × 25 ÷ 100 = 50
Therefore, 25% of 200 is 50.
How to Find What Percentage One Number Is of Another
To calculate what percentage X is of Y, divide X by Y and multiply the result by 100.
The formula is:
Percentage = X ÷ Y × 100
For example, 50 is what percentage of 200?
50 ÷ 200 × 100 = 25%
How to Calculate Percentage Increase
Percentage increase measures how much a value has grown compared with its original value.
The formula is:
Percentage increase = (New value − Original value) ÷ Original value × 100
For example, if a price changes from 100 to 125, the increase is 25%.
How to Calculate Percentage Decrease
The same percentage-change formula can be used when the new value is lower than the original value.
For example, if a value decreases from 200 to 150, the decrease is 25%.
Common Uses for Percentage Calculations
Percentage calculations are useful for discounts, price changes, sales, grades, statistics, business reports, taxes, budgeting and everyday comparisons.
Discounts and changes use different bases
A 15% discount on a price of 80 is 80 × 15 ÷ 100 = 12, leaving 68 to pay. Enter 15 and 80 in the first calculator to find the discount; subtract it from the original price.
A change from 40 to 50 is a 25% increase because the difference, 10, is divided by the original 40. The reverse change from 50 to 40 is a 20% decrease. Reversing direction changes the base.
Percentage points are not percentage change
A rate falling from 4% to 3.5% drops by 0.5 percentage points: a 12.5% reduction relative to the original rate. Enter 4 and 3.5 in the change calculator to check it. A zero original value cannot give a finite percentage change. For gratuity and bill splitting, use the Tip Calculator.
Frequently Asked Questions
How do you calculate 20% of a number?
Multiply the number by 20 and divide by 100. For example, 20% of 150 is 30.
What percentage is 50 out of 200?
Divide 50 by 200 and multiply by 100. The result is 25%.
How do you calculate a percentage increase?
Subtract the original value from the new value, divide the difference by the original value, and multiply by 100.
How do I find the original number from a percentage?
Divide the known value by the percentage and multiply by 100. If 18 is 20% of a number, the number is 18 ÷ 20 × 100 = 90. For a price after a 25% discount, divide by 0.75: 150 ÷ 0.75 = 200.
Can percentages be greater than 100%?
Yes. A percentage can be greater than 100% when a value is larger than the reference value. For example, 300 is 150% of 200.
Is this calculator free?
Yes. The Utivaro Percentage Calculator is free and requires no signup.
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Everyday examples you can check
| Situation | Calculation | Answer |
|---|---|---|
| Exam: 42 of 60 correct | 42 ÷ 60 × 100 | 70% |
| Salary 3,000 → 3,240 | 240 ÷ 3,000 × 100 | +8% |
| 20% off, then another 10% off 100 | 100 × 0.80 × 0.90 | 72 (28% off, not 30%) |
| Price 115 including 15% VAT | 115 ÷ 1.15 | 100 before tax |
| Rise 50%, then fall 50% | 100 × 1.5 × 0.5 | 75 (a net loss of 25%) |
To add or remove VAT or sales tax in one step, use the VAT and Sales Tax Calculator above. It has presets for Jordan (16%), Saudi Arabia (15%), Egypt (14%), Bahrain (10%), the UAE (5%) and Oman (5%), and the price before tax plus the tax always adds up to the total.
The traps in the last three rows catch most people: stacked discounts multiply, VAT is removed by dividing, and a rise followed by an equal percentage fall doesn't return to the start. All three are explained in Percentage Formulas.
Quick answers to common percentage questions
| Question | Working | Answer |
|---|---|---|
| What is 10% of 250? | 250 × 10 ÷ 100 | 25 |
| What is 20% of 1,500? | 1,500 × 0.20 | 300 |
| 45 out of 60 as a percentage | 45 ÷ 60 × 100 | 75% |
| 18 is 20% of what number? | 18 ÷ 20 × 100 | 90 |
| Price after 25% off is 150. Original price? | 150 ÷ 0.75 | 200 (not 187.50) |
| Change from 250 to 300 | 50 ÷ 250 × 100 | +20% |
| Change from 300 to 250 | −50 ÷ 300 × 100 | −16.67% |
| Cost 80, selling price 100 | 20 ÷ 80 and 20 ÷ 100 | 25% markup, 20% margin |
The reverse questions in rows 4 and 5 divide instead of multiply: the known value is already the result of a percentage, so you work back to the whole.
Percentage formulas in Excel and Google Sheets
With a value in A2 and the whole or new value in B2:
| To find | Formula |
|---|---|
| 20% of A2 | =A2*20% |
| A2 as a percentage of B2 | =A2/B2 |
| Percentage change from A2 to B2 | =(B2-A2)/A2 |
| Whole when A2 is B2 percent of it | =A2/B2*100 |
| Price before 20% VAT from a total in A2 | =A2/1.2 |
Format the cells for the second and third formulas as Percentage, or the result shows as a decimal such as 0.25 instead of 25%.