Less than 1% of Facebook ads get clicked. Not sure what sort of roi marketing folks have come up with to convince purse strings their ads are actually producing, but if the "marketing" department can't spin numbers to look good, might be time find a new marketing department.
Then you can get 2% of your ads clicked on.
All that said, I'd be interested in learning if my layman's perspective is garbage (which, let's be honest, it probably is).