No scientist would say with certainty that Man is responsible for 68.334598721% of warming over the past 100 years. What they can say is that Man is the primary driver of climate change. And they are saying that. So if you want an answer like 68.334598721%, then you are showing that you are in over your head here. There is no consensus on the EXACT AMOUNT Man is responsible for, but rather that they can say with a high degree of confidence that a) its happening and b) that it is because of Man.
Again, for the 500th time, they arent in consensus about the exact amount Man has caused it, but that Man is a primary driver of climate change.
If you cant grasp this, then its on you. Do your own research to prove me wrong. Feel free to start here:
https://scholar.google.com/scholar?q=climate+change+drivers&btnG=&hl=en&as_sdt=0%2C26Edited by Badird at 15:27:21 on 08/03/17