Getting over 1m reach on my FB video posts but my articles reach only 2k?

I have a page with almost 700k fans and reach has been all over the place for a while now. A few months ago I was reaching around 100k people with my articles (mostly new trending articles from respected blogs such as Boredpanda). But lately, I'm getting hardly any reach on them anymore (between 2k and 10k). My video posts still do fantastic though, reaching over a million in some cases. Does anyone have an idea how I can improve the reach for my articles?