Sales and profits fell sharply in the fourth quarter. Here's what it means for the turnaround. Investors in Starbucks (SBUX 0.17%) knew that the arrival of Brian Niccol, the former star CEO of Chipotle, in the corner office wouldn't magically fix the business. Still, they were unprepared for how bad Starbucks' performance was in the fiscal fourth quarter, which ended Sept. 29. The coffee chain dumped its preliminary results on investors a week earlier, clearing the air before the full report next Wednesday. ...