U.S. & Economics Help?

I need to imagine that I invested $1,000 in a company one year ago, and I want to see how my your investment would be doing today. I chose Tesla whose stock price was 216.99 on 5-20-16 and 315.5 on 5-19-17. 1. How much money would I have made or lost on an investment of $1000? 2. Could I have made more money by selling sooner?