Percentage Change Calculator

A Percentage Change Calculator computes the relative change between an old (original) value and a new value, expressed as a percentage. It tells you by how much a value has grown or shrunk relative to its starting point. Key concepts: - **Percentage Increase**: When the new value is greater than the old value - **Percentage Decrease**: When the new value is less than the old value - **Percentage Change**: The general term covering both increase and decrease Common uses: - Price changes (e.g. sale discounts, inflation) - Stock market gains/losses - Population growth - Exam score improvements - Business revenue changes - Weight loss/gain tracking

Using our Percentage Change Calculator takes just 3 seconds: 1. **Enter the Original Value**: Type the starting number (old value, initial price, beginning amount) 2. **Enter the New Value**: Type the final number (new price, current amount, ending score) 3. **Click Calculate**: Instantly see: - The percentage change (positive = increase, negative = decrease) - The absolute difference between values - A clear label showing "% Increase" or "% Decrease" Examples you can try: - Old: 100, New: 120 → 20% increase - Old: 200, New: 150 → 25% decrease - Old: 49, New: 73 → 48.98% increase

The Percentage Change Formula is: **Percentage Change = ((New Value − Old Value) / |Old Value|) × 100** Where: - New Value = the final or current value - Old Value = the original or starting value - |Old Value| = absolute value of Old Value (always positive) A **positive result** = percentage increase A **negative result** = percentage decrease Example 1 — Price Increase: Old price: ₹500 → New price: ₹650 Change = ((650 - 500) / 500) × 100 = **30% increase** Example 2 — Weight Loss: Old weight: 85 kg → New weight: 72 kg Change = ((72 - 85) / 85) × 100 = **−15.3% decrease** Example 3 — Stock Loss: Old: $140 → New: $119 Change = ((119 - 140) / 140) × 100 = **−15% decrease**

Why use SuperCalc's Percentage Change Calculator? ✓ **Instant Results**: No waiting, no loading — results appear as you type ✓ **100% Free**: No subscription, no ads blocking content ✓ **Always Correct**: Uses the standard mathematical formula ✓ **Mobile-Friendly**: Works perfectly on phone, tablet, laptop ✓ **No Sign-Up**: Just open and calculate ✓ **Clear Output**: Shows increase vs. decrease clearly with color coding Use cases: - Students doing math homework - Finance professionals tracking KPIs - Investors monitoring portfolio gains/losses - Teachers grading improvement - Shoppers calculating sale savings - Businesses tracking revenue, costs, or growth

Pro Tips for Accurate Percentage Change Calculations: 1. **Always put the original value first**: The "old" value is your denominator — getting this wrong flips your result 2. **Use for year-over-year comparisons**: Compare monthly revenue, annual sales, or quarterly profits 3. **Negative result is fine**: It means a decrease — don't panic, it's mathematically correct 4. **Don't confuse with Percentage Difference**: Percentage difference uses the average of two values; percentage change uses the original 5. **For stocks**: Use yesterday's closing price as "old value" and today's as "new value" 6. **For weight loss**: Use your starting weight as "old" and current weight as "new" Common Mistakes to Avoid: ✗ Swapping old and new values (gives wrong direction) ✗ Using percentage change when you want percentage difference ✗ Forgetting to multiply by 100 in manual calculations ✗ Rounding intermediate steps (let the calculator handle it)