Rotation of Charackter, relative to the World

Hi Folks!
I want to set up my Animator Parameter for turning, but i can't get it right.

if i rotate my charackter counterclockwise (topdown view, with gamepad),
i want my Animation for turning left be played.
This is what i got so far:

if (Turning <0.1) animator.SetFloat("Turn", -1);
else animator.SetFloat("Turn", 0);

My Problem is now, that i need to fill my "Turning" variable.

I wondered if i could just observe the Angle between my Charackter and the world.

if it grows -> "turn" gets to 1 and vise versa.

is this possible?

Im new in coding obviously. I Hope it's not the dumb-question of the day.