When is 97% not a majority?

We constantly hear from climate change deniers, i.e.. the Republican Party, that it's not real or that scientists are in agreement on it.  And even if it is real, it's not caused by humans.

From ABC News (Australia):

A comprehensive assessment of climate change research has found an overwhelming consensus among scientists that recent warming is human-induced.

The study looked at 12,000 climate research papers from the last two decades, and identified 4,000 that stated a position on the cause of recent global warming.

Those papers, which were all published between 1991 and 2011, were written by more than 10,000 scientists.

Just over 97 per cent of the scientists agreed that man-made warming was a reality.