For those of you in the social media space you may already be familiar with socialbakers and their suite of products. However if you are not I encourage you take a look. I am in no way affiliate with them, I just came across a story recently that referenced Facebook statistics and their tracking of them. Here are their public Facebook statistics, you can choose the time period and a recent article quoted them showing that Facebook had lost 8 million U.S. users over the last 6 months.
Their analytics product allows you to track statistics for Facebook, YouTube and Twitter. You can view fan growth, engagement rates by day of week and more. You can also benchmark your performance against those in your same industry as well as an analysis against competitors. Another feature to help you promote your business even more is to look at the key influencers for your brand. There are more features you can use.
You can also use their Builder Pro application which allows you to manage multiple accounts on one page. You can also track your competition and watch what they are doing in real time. I suggest you take a look at socialbaker, they may just make your life easier.