August 9, 2017. Difficulty rose by +7.33% to 923.23B from 860.22B.
Change
+7.33%
New difficulty
923.23B
Period length
13.1 days
Network hashrate then (7-day)
6.7 EH/s
Bitcoin price then
$3,409
Hashprice then
$822/PH/day
The 2,016 blocks before it took 13.1 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 7.33%: a large adjustment. For every machine on the network that is a pay cut of the same size until the next retarget.