December 3, 2018. Difficulty fell by -15.13% to 5.65T from 6.65T.
Change
-15.13%
New difficulty
5.65T
Period length
16.5 days
Network hashrate then (7-day)
38.0 EH/s
Bitcoin price then
$4,077
Hashprice then
$194/PH/day
The 2,016 blocks before it took 16.5 days, longer than the 14 intended, so hashrate had fallen, and difficulty fell by 15.13%: one of the largest adjustments on record. For every machine on the network that is a pay rise of the same size until the next retarget.