1. What is a Yearly Change Calculator?

Definition: This calculator determines the percentage change between an old value and a new value over a yearly period.

Purpose: It helps analyze growth rates, performance changes, or any metric that changes over time.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \%C \) — Annual change percentage
• \( V_{new} \) — New value (current year)
• \( V_{old} \) — Old value (previous year)

Explanation: The difference between new and old values is divided by the old value to get the relative change, then multiplied by 100 to convert to percentage.

3. Importance of Yearly Change Calculation

Details: Calculating annual change helps track growth trends, compare performance year-over-year, and make data-driven decisions.

4. Using the Calculator

Tips: Enter the old value (previous year) and new value (current year). The old value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What does a negative percentage mean?
A: A negative percentage indicates a decrease from the old value to the new value.

Q2: Can I use this for non-yearly periods?
A: Yes, the formula works for any time period, but results represent change over that specific period.

Q3: Why is the old value denominator important?
A: Using the old value as the base provides context for the magnitude of change relative to the starting point.

Q4: How do I interpret a 0% result?
A: A 0% change means the new value is exactly the same as the old value.

Q5: What's the difference between percentage change and percentage points?
A: Percentage change calculates relative difference, while percentage points measure absolute difference between percentages.