Key TakeawaysDave & Buster's Entertainment reported profit that exceeded analysts' forecasts as the chain made changes to its menu, pricing strategy, and added new locations.Still, comparable store sales fell 6.3% from a year ago as CEO Chris Morris said the company faced a "complex and challenging environment."Shares of Dave & Buster's rose in early trading Wednesday before giving up gains later in the session. Dave & Buster’s Entertainment (PLAY) posted a better-than-expected profit for the second quarter ...