Suppose that you buy (long) two corn futures contracts (5,000 bushels each) at the price of $4.38/bushel. Your initial margin is $2,303 per contract. Now assume that one month later the futures price for these corn futures is $5.07/bushel. What is your return on your invested capital? Enter your answer in % form rounded to the nearest two decimal places, but enter the number only (e.g., for 50% enter 50 not 0.5).