Suppose that on January 1, 2013, you purchased a coupon bond with the following characteristics: Face value: $1,000 Coupon rate: 8 3/8 . Current yield: 7% Maturity date: 2015 If the bond is selling for $840 on January 1, 2014, then the rate of return on this bond during the holding period of calendar year 2013 was [%. (Round your response to three decimal places.)