I agree with the other answerers. However is a link to a page which shows 3 methods you can use to forecast the growth rate of a stock:
http://www.intrinsicvaluespm.com/spmvari...
The easiest method is just to look at the past growth rate and then project that forward, however Apple has had an insane growth rate over the past 10 years and a repeat of that performance is probably not likely. The other methods explained include the "Plowback Method" and "Financial Modeling". Financial modeling is definitely the most effective method, but I'll let you read about it. Should only take you a few minutes - check it out!
Yep, there is no reliable formula of calculating the future growth of a company. There are only forecasts, which are nothing more than an educated guess and they are wrong more often as they are right.
Forecast are made by economists and stock analysts which follow and analyze a company's potential growth. They usually make a 5-year forecast of what they expect the company to do, which is then averaged with all other analysts predictions and published in financial journals, blogs and sites such as Yahoo Finance. Here are the results of the past 5 years growth, the forecasts for next year and for the next 5 years for Apple. Based on that data you can construct a graph or chart for the next 10 years and no one will be able to prove you wrong, until the year 2024 when we know what really happened.
http://finance.yahoo.com/q/ae?s=AAPL+Ana...
Growth rate as in, Forecast?
Well there is no mathematical way of forecasting growth rate of any company, You just take in any value based on :
*What kind of products it will unveil (Iphone 6,7 , 8 or more),
*The recent success rate of its product and how likely it will grow
*New innovations eg iTv
Most people just take the economic growth rate (Safer)
You can take any value but you should be able to explain WHY you think this rate is likely the rate at which APPLE will grow.
How I forecast 10 years growth rate for apple inc from 2014 till 2023?