i need help with this problem bad. I can't figure it out.

Calls for March 15, 2019 Contract Name Last Trade Date Strike Nast Price Bid Ask Change \% Change Assume you purchased the right to sell 2,100 shares of Target stock in March 2019 at a strike price of $55 per share. Suppose Target tock sells for $52 per share immediately before your options' expiration. What is the rate of return on your investment? What is your ate of return if the stock sells for $66 per share? Assume your holding period for this investment is exactly three months. (A negative ralue should be indicated by a minus sign. Do not round intermediate calculations. Enter your 3-month returns as a percent ounded to 2 decimal places.)