New world record in hashrate, the winning number is 23938 PH which means that hashrate has increased 30% since last increase in difficulty.
So embrace for a decline in income per TH of about 20-25%
I think you calculated something wrong. The expected difficulty increase which happens in 90 blocks (15 hours) is just 11.1%. It is far from 30%.
Yes its not at all a calculation, it is an estimation, whe are not there just Yet, and since i suspect what is going to happen, that is my bet on it.
20 to 25% increase in difficulty is the estimation, the 30% increase in hashrate is the actual number, which i keep track of every day and save in my excel sheet so i can follow on daily basis whats going on... 26th of Jan the PH number was 18370