If an interviewer asks, "Why did you leave (or why are you leaving) your job?" and you're unemployed, state your reason for leaving in a positive context: "I managed to survive two rounds of corporate downsizing, but the third round was a 20% reduction in the workforce, which included me."

If you are employed, focus on what you want in your next job: "After two years, I made the decision to look for a company that is team-focused, where I can add my experience."