Key TakeawaysUnitedHealth Group shares declined Tuesday after the company lowered its full-year earnings per share (EPS) forecast.In decreasing its earnings outlook, the company cited the impact of a cyberattack against its Change Healthcare division in February.Third-quarter revenue beat expectations, while earnings slightly missed. Shares of UnitedHealth Group (UNH) tumbled Tuesday after the company lowered its full-year profit outlook to reflect the impact of a cyberattack against its Change Healthcare d ...