You sell short 200 shares of MSFT at $50 per share. You post the 50% margin required for the short sale. Assume you earn no interest on your margin funds, nor pay any interest on the loan of shares. The company stock pays dividends of $0.39 per share every quarter. What is your rate of return on this position, if you close it out at $34 per share after one year? Enter answer in percents, accurate to 2 decimal places.