Calculator Inputs
Example Data Table
| Starting Value | Ending Value | Years | Total % Change | Compound Yearly % |
|---|---|---|---|---|
| 1,000 | 1,400 | 3 | 40.00% | 11.87% |
| 5,000 | 6,500 | 4 | 30.00% | 6.78% |
| 850 | 1,020 | 2 | 20.00% | 9.54% |
| 12,000 | 18,000 | 5 | 50.00% | 8.45% |
Formula Used
This calculator reports both simple yearly change and compound yearly change. The total percentage change compares ending value with starting value. The simple yearly percentage spreads the full percentage change evenly across the selected years. The compound yearly percentage uses annualized growth, often called CAGR.
| Measure | Formula |
|---|---|
| Total Change | (Ending Value − Starting Value) |
| Total Percentage Change | ((Ending Value − Starting Value) ÷ Starting Value) × 100 |
| Simple Yearly Percentage | Total Percentage Change ÷ Years |
| Compound Yearly Percentage | [(Ending Value ÷ Starting Value)^(1 ÷ Years) − 1] × 100 |
| Monthly Compound Rate | [(Ending Value ÷ Starting Value)^(1 ÷ (Years × 12)) − 1] × 100 |
How to Use This Calculator
- Enter the starting value.
- Enter the ending value you reached after the selected time.
- Enter the number of years in the growth period.
- Set the start year to label the table and chart clearly.
- Choose projection years if you want future estimates.
- Pick the decimal places for cleaner output formatting.
- Add a value label such as revenue, savings, traffic, or price.
- Press Calculate to show the result block above the form.
- Review the cards, yearly table, and Plotly graph.
- Use the CSV and PDF buttons to export your results.
Frequently Asked Questions
1) What does yearly percentage increase mean?
It shows how much a value grew each year. This page reports both a simple yearly average and a compound yearly rate, so you can compare straight-line growth with annualized growth.
2) What is the difference between simple yearly change and compound yearly change?
Simple yearly change divides total percentage change equally across all years. Compound yearly change finds the annualized rate that turns the starting value into the ending value over the same period.
3) Why is CAGR useful in this calculator?
CAGR gives a smoother yearly rate when growth compounds. It is useful for investments, sales growth, traffic growth, and other long-term comparisons involving a starting value and an ending value.
4) Can I use this calculator for decreases too?
Yes. If the ending value is lower than the starting value, the percentage result becomes negative. The output cards will show a decrease instead of an increase.
5) Why must the starting value be greater than zero?
Percentage change divides by the starting value. A zero or negative starting base can make annualized growth invalid or misleading, especially for compound calculations.
6) What does the projection section do?
Projection years extend the chart and yearly table beyond the entered ending value. The future estimate uses the compound yearly percentage to continue the growth path.
7) What is shown in the Plotly graph?
The graph compares a straight-line yearly path with a compound yearly path. This helps you see how linear growth differs from annualized growth over time.
8) When should I export CSV or PDF?
Use CSV when you want spreadsheet analysis or record keeping. Use PDF when you need a neat report for sharing, printing, or attaching to documents.