%
RPC
🧠 Smart Search⚡ Instant Results📋 Copy Results🧮 Step-by-Step📱 Mobile Friendly🔒 100% Private

Percentage Change Calculator

Calculate percentage increase or decrease between two numbers. Free, fast, and accurate.

📈

Percentage Change

Calculate increase or decrease between two numbers

Try:

How to Calculate Percentage Change

Percentage change measures how much a value has increased or decreased relative to its original value. The formula is:

((New Value - Old Value) ÷ Old Value) × 100 = Percentage Change

Example: A stock went from $100 to $125.

  1. Find the difference: $125 - $100 = $25
  2. Divide by the original value: $25 ÷ $100 = 0.25
  3. Multiply by 100: 0.25 × 100 = 25%
  4. The answer is a 25% increase

If the new value is lower than the original, the result will be negative, indicating a decrease. Our calculator automatically shows whether it is an increase or decrease with a visual indicator.

Real-World Examples

Price Increase

Gas went from $3.20 to $4.00 per gallon. Percentage change: (4.00 - 3.20) ÷ 3.20 × 100 = 25% increase.

Weight Loss

You went from 180 lbs to 162 lbs. Percentage change: (162 - 180) ÷ 180 × 100 = 10% decrease.

Sales Growth

Monthly sales went from $40,000 to $52,000. Percentage change: (52000 - 40000) ÷ 40000 × 100 = 30% increase.

Temperature Change

Temperature dropped from 95°F to 78°F. Percentage change: (78 - 95) ÷ 95 × 100 = 17.89% decrease.

Website Traffic

Visits went from 8,000 to 12,000 per month. Percentage change: (12000 - 8000) ÷ 8000 × 100 = 50% increase.

Exam Score Improvement

Your score went from 68% to 85%. Percentage change: (85 - 68) ÷ 68 × 100 = 25% increase.

Frequently Asked Questions

How do I calculate percentage change?
Subtract the old value from the new value, divide by the old value, then multiply by 100. Formula: ((New - Old) ÷ Old) × 100. A positive result is an increase, negative is a decrease.
What is the percentage change from 100 to 150?
The percentage change from 100 to 150 is a 50% increase. Calculation: (150 - 100) ÷ 100 × 100 = 50%.
How do I calculate percentage decrease?
Use the same formula: ((New - Old) ÷ Old) × 100. If the result is negative, it is a decrease. For example, from 200 to 150: (150 - 200) ÷ 200 × 100 = -25%, a 25% decrease.
Can I use this to track stock price changes?
Yes. Enter the original stock price and the new price. The calculator shows the percentage change, which is useful for analyzing investment performance.
What is the formula for percentage increase?
The formula is: ((New Value - Old Value) ÷ Old Value) × 100 = Percentage Change. Our calculator automates this with instant results and a step-by-step breakdown.

Other Calculators

📊Percentage of a Number

Calculate a percentage of a number.

📉X is What % of Y?

Find what percentage one number is of another.

🎯Percentage Error

Find error between measured and actual values.

💰Discount Calculator

Calculate final price after a discount.

⭐Percentage Points

Difference in percentage points vs percent.

🔄Unit Converter

Convert between measurement units.

⚖️BMI Calculator

Calculate Body Mass Index.

← Back to all calculators