Versatile Percentage Calculator

Perform percentage of a number, percentage change, reverse percentage and distribution. Explore insightful visualizations & examples for each operation.

1. What is X% of Y?

Percent (%)

Of (number)

Calculate

% of is:

Real-world Example: If you got 20 out of 80 points in a quiz, that's 25% of the total possible. 25% of 80 = 20.

2. Percentage Increase/Decrease

From (Old Value)

To (New Value)

Calculate

Change from to is:

%

Real-world Example: If your salary increases from $2000 to $2500: (({ '2500' } - { '2000' }) / { '2000' }) × 100 = 25% increase.

3. Find the Original Value (Reverse %)

Final Value

After (%)

Calculate

is % of

Real-world Example: If you paid $80 after a 20% discount, the original price was $100: 80 ÷ (80%) = 100.

4. Percentage Distribution

Numbers (comma separated) Calculate

Percentage share of each entry:

Real-world Example: If four friends share a bill of $100 in the ratio 10, 20, 30, 40, their shares are 10%, 20%, 30%, and 40% respectively of the total.

How Are These Percentage Calculations Used?

• Shopping: Calculating sale discounts, tax rates, and price markups.
• Finance: Evaluating investment returns, loan interest changes, and budgeting.
• Health & Nutrition: Tracking macronutrient percentages or weight changes.
• Education: Interpreting test scores, pass/fail rates, and grading curves.
• Work & Productivity: Measuring progress, completion rates, or performance improvements.

---

Common Percentage Formulas

Percent of a Number:
X% of Y = Y × (X / 100)

Percentage Change:
((New - Old) / |Old|) × 100

Reverse Percent:
Final Value ÷ (% / 100)

Percentage Share:
Part ÷ Total × 100

See Percentages In Action

Understanding how percentage calculations appear in shopping, finance, and daily activities can give you a real edge!

Percentage Calculator – Easily Find Percent Increase, Decrease & More

Need help figuring out percentages? Whether you’re shopping, calculating discounts, or reviewing data, our Percentage Calculator helps you quickly find percent increase, percent decrease, what percent of, or how much is X% of Y. It’s fast, simple, and always accurate.

---

🎯 What Is a Percentage Calculator?

A Percentage Calculator is a free tool that helps you solve percentage-related math problems. You can use it for:

• 🔺 Finding percentage increase or decrease
• 📊 Calculating what % one number is of another
• 💵 Figuring out discounts and markups
• 💯 Solving school or business math faster

It removes guesswork and saves time—especially when you’re in a rush.

---

🧮 Common Percentage Formulas

Here’s a quick look at the most-used percentage formulas:

Calculation Type	Formula	Example
Percent of a number	(X ÷ 100) × Y	20% of 200 = 40
What percent of is	(X ÷ Y) × 100	50 is what % of 200 = 25%
Increase/Decrease by %	(Difference ÷ Original) × 100	From 100 to 120 = 20% increase
Percentage difference	(	A – B

---

✨ Real-Life Examples

Example 1:
You bought shoes at 25% off. The original price is $80.
Solution: (25 ÷ 100) × 80 = $20 discount
You pay = $80 – $20 = $60

Example 2:
Your salary went from $3,000 to $3,600.
Solution: ((3,600 – 3,000) ÷ 3,000) × 100 = 20% increase

See how easy that was?

---

💡 Key Features

• 🔢 Calculate in multiple ways: increase, decrease, percent of
• 🔄 Switch between input methods (percent to number and vice versa)
• 📱 Mobile-friendly interface
• ⏱️ Instant, accurate results
• 📊 No login or account needed

---

👩‍🏫 Who Uses This Tool?

This calculator helps many people, including:

• 🧾 Shoppers figuring out sales and taxes
• 💼 Small business owners calculating markup and profit
• 👨‍🏫 Students doing percentage math problems
• 📈 Financial analysts comparing values
• 📊 Anyone needing quick percentage answers

---

🔥 Features Included

• Percentage calculator
• What is X percent of Y
• Percent increase calculator
• Discount calculator online
• Simple percentage math tool
• How to calculate percentage
• Sales tax calculator
• Percent difference solver

---

🧭 Related Tools on Desmos Calculators

• Fraction Calculator – perfect for converting percentages
• Discount Calculator – find savings instantly
• GST Calculator – calculate tax-inclusive prices

---

🔗 External Trusted Resources

• Khan Academy – Percent Basics
• Investopedia – Understanding Percentages

---

---

✅ Final Thoughts

Percentages show up in your daily life more than you think. From shopping to exams to work reports, they’re everywhere. With our Percentage Calculator, you can do it all—faster and easier.