Regencell Bioscience Holdings Ltd Depreciation and Amortization 3 year CAGR is -76.54% for the quarter ending September 30, 2023, a 19.52% change year over year. Depreciation and Amortization involve the systematic allocation of the cost of tangible and intangible assets over their useful lives. CAGR, or the Compound Annual Growth Rate, quantifies the mean annual growth rate of an investment or financial metric over a specified time span, considering the influence of compounding. It is instrumental in determining the true annualized return on an investment.