(Bloomberg) Discover Financial Services posted a 62% drop in fourth-quarter profit as the company continued to grapple with the fallout from compliance and risk-management lapses that led to the resignation of its chief executive officer last year. The company’s shares tumbled.Most Read from BloombergBlinken’s Return From Davos Was Delayed After Plane Broke DownApple to Sell Watches Without Oxygen Feature After Legal SetbackPakistan’s Army Strikes Back at Iran as Both Sides Urge CalmSingapore