I manage several brand pages and ever since the latest algorithm change in May, the reach on all of the pages has shot way up, but engagement has plummeted. I can't figure out what would be responsible for this change. It's engagement by total audience so it's not a case of stagnant engagement when the reach increases. I tried to see if there have been any changes in how FB reports metrics, but couldn't find anything. Any and all ideas are welcome. Thanks!