Calculate the alpha of a fund that earned an average annual return of -0.1% over the last 4 years. The risk-free rate was 1.8% and the average market return was 8.7% during that time. The fund's and the market's returns had a correlation of 0.5. The standard deviation of returns was 41% for the fund and 22% for the market. Answer in percent, rounded to one decimal place.