A fund achieves annual returns as {17% 15% 23% -5% 12% 9% 13% -4%}. The fund has a target return of 0%. The downside risk is__________ and Sortino ratio is __________for this fund. (Round results to 4 decimal place)

The answers are 0.0226 and 4.4172

plz show me the calculation steps and formula used