The current difficulty is 987.2 PH. The next difficulty is estimated at 991.2 PH, a change of +0.40%. The difficulty changes globally every time a new block is mined, based on how fast blocks are being found.
Hash Price Report
The last block was at height 156,556. The current block reward is 129,098.7 mSCP. Based on this and on the current difficulty, miners are being paid 126.8435 mSCP/PH, which corresponds to about 10.96 mSCP/day per GH/s.