Six years ago you purchased a bond with 11 years remaining until maturity, a coupon rate of 3.00% and a yield to maturity of 4.00% at the time of purchase. This morning you received a coupon, and then sold the bond at a yield to maturity of 4.80%. What is the rate of return from 6 months ago to today (expressed as an interest rate, not a dollar amount)?

Please show work, including any potential financial calculator input using the time value of money keys. Please no Excel.

Thank you!