Deutsche Bank AG research analyst Pankaj Jha left the firm after it told clients one of his reports contained “significant similarities” to an article from Royal Bank of Scotland Group Plc. Jha left his position in New York as a mortgage-bond analyst this week, according to people familiar with the matter who declined to be identified because they weren’t authorized to discuss it. Jha and John Gallagher, a spokesman for the Frankfurt-based bank, declined to comment.