The difference between a creed and a statement of beliefs is the degree of authority it carries. A statement of beliefs is for informational purposes only. A creed is intended as a standard of discipline.
Some would define the difference in terms of changeability. A statement of beliefs, they say, can be changed. A creed cannot. But history does not bear that out. A review of the early ecumenical creeds shows that, council after council, creeds were changed. A faith statement is a creed when it is designed as a doctrinal test.