I have a page with 14,000 fans. I put up a post today -- a link post to an interesting article in my niche. So far the reach is less than 500. It has fewer than 20 likes and just a handful of shares. It actually has a decent number of link clicks, about 60.
The reach is lower than normal. But it's hard to tell whether that's the result of a FB change or not. The more successful posts on this page would generally be getting more likes and shares by now, so it might be that the post was so-so.