What is Percentage Change

Percent change is a way to express how much a value has increased or decreased in percentage terms over time.

---

Formula for Percent Change:

Percent Change=New Value−Old ValueOld Value×100\text{Percent Change} = \frac{\text{New Value} – \text{Old Value}}{\text{Old Value}} \times 100Percent Change=Old ValueNew Value−Old Value​×100

---

Two Types of Percentage Change

• If the result is positive → it’s a percent increase
• If the result is negative → it’s a percent decrease

---

Example:

Let’s say a product’s price increased from $50 to $60.

-60−50/50×100=

=10/50 x 100

=20%

So, it’s a 20% increase.

What is Percentage

---

Why You Need a Smart Percentage Calculator

 

Percentages are everywhere: discounts, grades, growth rates, budgets, and conversions. But doing the math manually? That’s a headache. That’s where our percentage calculator online comes in.

Our calculator is clean, fast, and designed to do more than just spit out numbers. It gives you visual context with a pie chart, easy-to-read outputs, and five powerful calculators in one place.

 

Formula to Calculate Percentage

When calculating a percentage, you use a basic equation:

P × V1 = V2, where P is the percentage, V1 is the initial value, and V2 is the result after applying the percentage. For example, if you want to find out how much 25% of 120 is, the equation would be 0.25 × 120 = 30. This means 25% of 120 is 30.

Need to calculate what is 18% of 240? Just enter the percent and total — we’ll do the rest.

Wondering if 50 is 20% of 250? Use this to find ratios and comparisons.3. Percentage Increase Calculator

Who Is This Tool For?

This tool is designed for everyone:

• Shoppers & Budget Makers: Instantly see what you’re saving during sales.
• Students & Teachers: Quickly calculate test scores or teach fraction-to-percent relationships.
• Small Business Owners: Use it to calculate profit margins, taxes, and markdowns.
• Marketers & Analysts: Easily interpret percentage growth or decline using the percentage increase calculator.

What Makes It Better Than Other Calculators?

• 💡 It’s a smart percent tool — intuitive, flexible, and visual.
• 📈 Each result is displayed using a pie chart to help you understand the numbers, not just see them.
• ⚙️ The layout is simple, responsive, and works perfectly on mobile.
• 🧠 It highlights the section you’re using and shows custom summaries and tips based on what you calculate.
• 🎯 It’s SEO-optimized and designed to load fast — no distractions, no popups, just math.

Use this formula:

Percentage of a Number = (Percentage × Total) / 100

Example: What is 20% of 150?
→ (20 × 150) / 100 = 30

How to Change a Number into a Percentage

To convert a fraction or decimal into a percentage:

• Multiply by 100
• Add the percent sign (%)

Examples:

• 0.25 = 0.25 × 100 = 25%
• ¾ = (3 ÷ 4) × 100 = 75%

Use our calculator to instantly convert any value to a percentage.

Step 1: Enter the Original Value

📌 Example: If your old salary was $2,000, enter 2000.

Find the number you are starting from.

Type this number in the field labeled something like “From” or “Old Value”.

Step 2: Enter the New Value

• Type the updated or current number in the field labeled “To” or “New Value”.

📌 Example: If your new salary is $2,500, enter 2500.

Step 3: Click the “Calculate” Button

Press the Calculate button to process the result.

📈 Step 4: View the Result

• The result will show the percentage increase or decrease between the two numbers.
• It will clearly tell you if it’s a rise or a drop.

📌 Example Output:

“There is a 25% increase”

Bonus Tip:

• If the result is positive, it’s an increase.
• If the result is negative, it’s a decrease.
• If both numbers are the same, the change is 0%.

How Do You Calculate the Percentage of Change?

To calculate the percentage change, use this simple formula:

Percent Change = [(New Value – Original Value) / Original Value] × 100

This formula helps identify how much a number has increased or decreased in relation to its starting point.

Need to know how much something has grown? Use our Percentage Increase Calculator:

Increase % = ((New Value – Old Value) / Old Value) × 100

Useful for:

• Salary hikes
• Revenue growth
• Performance tracking

Example: From $200 to $260 → 30% increase

What is Percentage Change Increase from 80 to 120?

Percent Change = ((120 – 80) / 80) × 100 = 50%

So, there’s a 50% increase from 80 to 120.

What is the Percent of Change from 4 to 5?

((5 – 4) / 4) × 100 = 25%

So, there is a 25% increase from 4 to 5.

What is Percentage Change Decrease from 72 to 36

Track reductions easily with our Percentage Decrease Calculator:

Decrease % = ((Old Value – New Value) / Old Value) × 100

Example: From $90 to $60 → 33.33% decrease

What is Percentage Change Decrease from 72 to 36

Percent Change = ((36 – 72) / 72) × 100 = -50%

This means a 50% decrease from 72 to 36

---

What is Percentage and Percentage Change Formula

Here are the three most common percentage formulas:

1. What is X% of Y? → (X × Y) / 100
2. X is what % of Y? → (X / Y) × 100
3. Percentage Change → ((New – Old) / Old) × 100
   

   Our tool includes all three built-in

Percentage Formula in Excel

In Microsoft Excel, use this formula:

=(NewValue – OldValue) / OldValue

Then format the result as a percentage:

• Select the cell → Click % on the toolbar

Example:
=(120 – 80)/80 → 0.5 → 50%

---

Percent Change – Key Takeaway

 

No sign-ups. No fluff. Just smart, visual, and flexible percentage calculations.

 

• Fast
• Accurate
• Visual

---