Trump most likely would do way worse, Clinton would take Pennsylvania, Michigan, North Carolina, and probably Florida and Wisconsin. (Yes, he would still win Iowa, Maine CD2, and possibly Ohio and Arizona.) As for Trump states, Utah could've been taken over by McMullin, with the help of Clinton and Johnson. Speaking of him, Johnson probably could've pulled off a victory in a state.
Possible Map:
Hillary Clinton/Tim Kaine: 322 Electoral Votes 49%
Donald Trump/Mike Pence: 210 Electoral Votes 31% PV
Evan McMullin/Mindy Finn: 6 Electoral Votes, 8% PV
Gary Johnson/William Weld: ?? Electoral Votes, 12% PV
Jill Stein/Ajamu Baraka: 0 Electoral Votes, 2% PV
Now, another topic is, If he boycotts the 2nd and 3rd debates, does he not respond to the Billy Bush tapes? Because if he doesn't, It would weaken him in several states, most notably, Arizona, Utah, Iowa, Ohio, Maine, Texas, etc. These are states where Clinton, or a third party/independent, such as Johnson or McMullin, could take over. After the general election, there could've been even more faithless electors against Trump.
Somewhat Unrealistic Map:
Clinton/Kaine: 355 Electoral Votes
Trump/Pence: 125 Electoral Votes
Johnson/Weld: 26 Electoral Votes
John Kasich/? (Faithless Electors:) 25 Electoral Votes
McMullin/Finn: 8 Electoral Votes
Faith Spotted Eagle/Winona LaDuke: 1 Electoral Vote