At t=0 you buy a bond that has 4 years to maturity and pays annual coupons at a coupon rate of 5% on a par value of $1,000. At t=0 the bond trades at a yield-to-maturity of 10%. In one year (t=1), you receive the first coupon payment and immediately sell the bond. At t=1, the bond (with 3 years remaining) still trades at a yield-to-maturity of 10%. What is the capital gain in percentage terms and the net gain in percentage terms from the sale of the bond over the one-year period (i.e., from t=0 to t=1)?