Senior Relationship Officer Question:

Unless you’re still working, you will get asked this question. Even if you are working, they will ask you why you want to leave. But more often than not, if you are not working, chances are that you were laid off, terminated, or quit. You just have to let them know the reasoning behind why you are not working at your most recent job.

If you left of your own free will, then explain why you left and what your plans were in doing so. If you were fired for performance reasons, a simple explanation is all that is needed, but make sure this will not affect the requirements for this new job. If you were laid off, let them know several members of your team were laid off due to the economy and slowing product sales. But warm that up a bit and put it into your own words so it makes sense.