The orange line is Trump's Disapproval Rating--
an aggregate of all polling sources performed by fivethirtyeight
Note: It is really rare, and REALLY bad for any President to be above 50% disapproval. Trump is the worst-polling President of all time, by a mile.
Note: See where past Presidents disapproval intersects with Trump's, e.g. Carter and H.W. Bush, and then the line ENDS (they don't get re-elected)