That is not a misprint.
Math:
CBO revenue is $278 billion less in 2020 than House GOP proposed in 2016.
(3680-3958= -278)
Spending $520 billion more than they proposed
(4163-4683= -520)
But AHCA wouldn't have done much about the deficit because most of the savings went to tax cuts.
CBO scored it as a mere $119B cumulative reduction over 10 years.