Yep, Trump needs to hold all Romney states and flip 64 EVs. If he loses any Romney states, add that to the total he needs to flip elsewhere.
Just a reminder:
Using simplest path, Trump needs to flip 63 electoral votes over Romney in 2012.
The closest states where Obama edged Romney were:
(lost by % of vote) (EVs) EV total
Florida (<1%) (29) 29
Ohio (1.9) (18) 47
Virginia (3) (13) 60
Colorado (4.7) (9) 69
next five closest
Pennsylvania (5.2) (20) 20
Iowa (5.6) (6) 26
New Hampshire (5.8) (4) 30
Nevada (6.6) (6) 36
Wisconsin (6.7) (10) 46