So 56% think that Trump hasn't accomplished much in his first 100 days (36% for Obama and 63% for Clinton).
Among
Republicans 18%
Independents 56%
Democrats 83%
Trump is though is a much more polarized candidate. I think that among those who didn't vote for him a
much larger share choose a "negative" answer no matter what compared to other presidents (even compared to Obama).
So while these results are pretty bad, I wouldn't say they are significantly worse than for other presidents.
And his base is OK with him (he would even probably win popular vote among voters 2015 according to this poll) so he surely may (and certainly will) keep blaming Democrats