I am trying to calculate the rate of return on AAPL with dividends for years 2017 and 2018.

I am trying to calculate the rate of return on AAPL with dividends for years 2017 and 2018.

I am using the formula [(P1 - Po) / (Po)] *100 where P1 is the ending price (current price) and Po is the starting price from one year ago.

P1 = 150.73 and p0 = 169.23

I am not sure how to incorporate the dividends.

Thank you for any insight.