turn around

turning in an opposite direction or position; "the reversal of the image in the lens"

turn abruptly and face the other way, either physically or metaphorically; "He turned around to face his opponent"; "My conscience told me to turn around before I made a mistake"

improve dramatically; "The new strategy turned around sales"; "The tutor turned around my son''s performance in math"

improve significantly; go from bad to good; "Her performance in school picked up"