Facebook reach changed?

Hi, my page and a friends page used to get some high reach but in the past week the likes and shares on the videos and posts have dropped significantly, my weekly reach used to be around 3M and now I'm just scraping 400k and my friends page is a massive page and the same is happening to him, what do you think this could be? Anyone else having the same issue?

Take a look here

yes, facebook change reach on videos, total epic, before i had 1 000 000 reach, perfect likes and shares, too much people likes my page, now i have 200 000 reach and bad like and share, now have picture so much better reach as videos...

iam use to usa real 5000 :ebay:many friend acc