回去 vs 回来 (Go back / come back)

1. 回去：Go back. From where you are now ----》 The other place
e.g.
我要回家去。
I wanna go back home. (Not home right now)


2. 回来：Come back. From the other place ----》 Where you are now
e.g.
我回来了。
I've come back home. (Be home right now)