Complex sentence: While up to 18% of scientists surveyed might disagree with the consensus view, when restricted to scientists publishing in the field of climate, 97 to 100% agreed with the consensus: most of the current warming is anthropogenic (caused by humans).
Split into simpler sentences: While up to 18% of scientists surveyed might disagree with the consensus view, when restricted to scientists publishing in the field of climate, 97 to 100% agreed with the consensus. The consensus view being that most of the current warming is anthropogenic (caused by humans).