The act of changing the direction in which something is oriented(noun)
WordNet. Princeton University. 2010.
Use "change of direction" in a sentence
"This sudden change of direction I did not at first understand, but soon learned that it was because of the movements of Marshal MacMahon, who, having united the French army beaten at Worth with three fresh corps at Chalons, was marching to relieve Metz in obedience to orders from the Minister of War at Paris."