October 4, 2018. Difficulty rose by +4.23% to 7.45T from 7.15T.
Change
+4.23%
New difficulty
7.45T
Period length
13.4 days
Network hashrate then (7-day)
53.4 EH/s
Bitcoin price then
$6,534
Hashprice then
$232/PH/day
The 2,016 blocks before it took 13.4 days instead of 14, so the network had more hashrate than the difficulty assumed, and difficulty rose by 4.23%: an ordinary adjustment. For every machine on the network that is a pay cut of the same size until the next retarget.