An easy way to remember which way your declination should be is: if you are east of Thunder Bay, the declination is to the west, and if you are to the west of the big Thunder, it is east (magnetic north is basically north of TB).
BTW, make sure you use as current of a map as possible, as the annual change isn't constant (ie. if you used a map from 1960 you are going to be off severely, as the annual change is (more than likely) different now than 45 years ago..... don't laugh, I have seen some pretty ancient maps used when training in civvy areas).
Al