I'd like to add to the question: How could Trump gain more than 50% of the Electoral Votes given he had even less than 50% of the absolute votes? (According to: http://www.nytimes.com/elections/results/president )
Because most of the votes Hillary got didn't help her win electoral votes: if you get 80% of the vote in a state, that gets you just as many electors as 50%+1. The remaining 30% is "wasted".