August 24, 2017. Difficulty fell by -3.80% to 888.17B from 923.23B.
Change
-3.80%
New difficulty
888.17B
Period length
14.6 days
Network hashrate then (7-day)
6.4 EH/s
Bitcoin price then
$4,262
Hashprice then
$1,401/PH/day
The 2,016 blocks before it took 14.6 days, longer than the 14 intended, so hashrate had fallen, and difficulty fell by 3.80%: an ordinary adjustment. For every machine on the network that is a pay rise of the same size until the next retarget.