Percentage Change Calculator
Easily calculate the percentage change between an old value and a new value to track growth or decline. Get instant, accurate results as you type.
Understanding Percentage Change Calculator
Tracking shifts over time is critical in finance, business, and science. The **Percentage Change Calculator** (which doubles as both a **percentage increase calculator** and a **percentage decrease calculator**) shows you exactly how much a value has grown or shrunk relative to its starting point.
### How to Calculate Percentage Change
If you want to track your website traffic, investment returns, or weight loss, you need to know the formula for percentage change:
`Percentage Change = ((New Value - Old Value) / Old Value) × 100`
If the result is positive, you have a **percentage increase**. If the result is negative, you have a **percentage decrease**.
### A Must-Have Business Percentage Calculator
In the corporate world, this is arguably the most frequently used **financial percentage calculator**.
* **Sales Tracking:** "Our monthly recurring revenue went from $50,000 to $62,000. What is the percentage increase?"
* **Expense Reduction:** "We cut server costs from $1,200 to $900. What is the percentage decrease?"
Our **percentage calculator with steps** built into its logic ensures you never mix up the "new" and "old" values, giving you mathematically perfect tracking metrics for your performance reports.
Step-by-Step Guide
- Enter the old value value.
- Enter the new value value.
- The result is calculated automatically and shown in the result box.
- Click the copy icon to copy the result to your clipboard.
Related in Basic
- Percentage Calculator
- Percentage Of Calculator
- Reverse Percentage Calculator
- Percentage Difference Calculator
Save for Later
Press Ctrl+D to bookmark this tool for quick access.
Frequently Asked Questions
What is a percentage change calculator?
It is a tool that calculates the relative change between an old value and a new value, expressing the increase or decrease as a percentage.
How do I calculate a percentage change?
Subtract the old value from the new value, divide that result by the old value, and then multiply by 100. Formula: ((New - Old) / Old) * 100.
What does a negative percentage change mean?
A negative percentage change indicates a decrease or drop from the original value.
What is the formula for percentage increase?
Percentage increase is a type of percentage change. The formula is the same: ((New Value - Old Value) / Old Value) * 100.
What is the formula for percentage decrease?
To explicitly find a decrease as a positive number, you can use: ((Old Value - New Value) / Old Value) * 100.
