CAGR smooths bumpy growth into one clean yearly rate. Enter the starting value, the ending value and the number of years to find the compound annual growth rate between them.
Compound Annual Growth Rate: the steady yearly rate that would carry the beginning value to the ending value if growth were perfectly smooth. The real path was bumpy — the rate exists to make different periods comparable.
Yes — if the ending value is smaller than the beginning value, CAGR is negative and shows the average yearly rate of decline.
A simple average ignores compounding and can seriously mislead. CAGR accounts for growth building on growth, which is how money actually behaves.