Five years ago, Rock Steady Corp issued a semiannual coupon bond with seven years until maturity. This bond was originally issued at par with a $1,000 face value. The coupon rate on the bond is 8%. Today, the yield-to-maturity (YTM) is 10%. Assume an investor bought the bond at the time it was issued and sold it today. What is the holding period return for the five year period of investment? Please provide the formula you used, and show your work.