Most common is the CAGR but it takes only starting and ending figures and for a volatile stock, result may not be representative of the actual picture.
What is your view on average growth rate calculated as follows:-
Growth rate = [(Current year - Previous year) / Previous year] x 100%
Average Growth rate = [( GR Y1 + GR Y2 + GR Y3 + GR Y4 + GR Y5) / 5]
GR = Growth Rate
Y = Year
Get the growth rate every year, add it up, then divide it by 5.