You decide to sell short 300 shares of Charlotte Horse Farms when it is selling ot its yearly high of $57. Your broker tells you that your thargin requirement is 60 . percent and that the commission on the purchase is 5480 . While you are short the stock, Charlotte pays a 52.90 per share dividend. At the end of one year, you buy 300 shares of Chariotte at $42 to dose out your position and are charged a commission of $460 and 12 percent interest on the money boriowed. What is. your rate of return on the investment? Do not round intermediate calculations, Round your answer to two decimal places