Lance Murdock purchased a wooden statue of a Conquistador for $7,800 to put in his home office 7 years ago. Lance has recently married, and his home office is being converted into a sewing room. His new wife, who has far better taste than Lance, thinks the Conquistador is hideous and must go immediately. Lance decided to sell it n e-bay and only received $5,000 for it, and so he took a loss on the investment. What was his rate of return, that is, the value of i?

What was Lance Murdock's rate of return, that is, the value of i? Enter a negative percentage for a loss.

___ % (Round to two decimal places.)