📊 Percentage Calculator Tool – Quick & Easy Calculations

A Percentage Calculator is a handy tool 🛠️ that helps you solve various percentage-related problems in seconds! Whether you're calculating discounts 🛍️, taxes 💰, grades 📚, or growth rates 📈, this tool makes math effortless.

🔢 Common Percentage Calculations

1️⃣ Find X% of a Number

Example: What is 20% of 500?
✅ Formula: (Percentage ÷ 100) × Number
➡️ (20 ÷ 100) × 500 = **100**

2️⃣ What Percentage is Y of X?

Example: 25 is what % of 200?
✅ Formula: (Part ÷ Whole) × 100
➡️ (25 ÷ 200) × 100 = **12.5%**

3️⃣ Increase/Decrease a Number by a Percentage

📈 Increase Example: 300 increased by 15% = ?

✅ Formula: Original × (1 + (Percentage ÷ 100))
➡️ 300 × 1.15 = **345**

📉 Decrease Example: 80 decreased by 20% = ?
✅ Formula: Original × (1 − (Percentage ÷ 100))
➡️ 80 × 0.80 = **64**

4️⃣ Percentage Difference Between Two Numbers

Example: What’s the % difference between 50 & 70?
✅ Formula: |(New − Old)| ÷ Old × 100
➡️ |70 − 50| ÷ 50 × 100 = **40%**

5️⃣ Find Original Number After % Increase/Decrease

Example: A number increased by 25% becomes 150. What was the original?
✅ Formula: Final Number ÷ (1 + (Percentage ÷ 100))
➡️ 150 ÷ 1.25 = **120**

✨ Why Use a Percentage Calculator?

✔️ Saves time ⏳ – No manual calculations!
✔️ Avoids errors ❌ – Get accurate results instantly.

✔️ Useful in daily life 🏡 – Shopping, finances, grades, fitness, and more!

📱 Where Is It Used?

🛒 Shopping: *"30% off $80 = ?"*

🏦 Finance: Interest rates, tax calculations

📊 Business: Profit margins, growth rates

🎓 Education: Test scores, grade percentages

💪 Health & Fitness: Weight loss, body fat %