What does turn around facts mean?
turn around facts are facts that where you start from the hundreds to the ones.
360 degrees is a full turn (as in if youre looking at the nutrition facts of a can of soda and you spin in all the way around, to where you can again read the nutrition facts) 180 degrees is half a turn (as in if youre holding a can of soda with the tab facing you, and turn it halfway to where the bottom of the can is facing you)
It's not an idiom - when you turn 360 degrees you just turn all the way around in a total circle and end up facing the same way. "A 180 degree turn" is a phrase you might hear to mean that someone turned around and went in the opposite direction - this is sometimes used to mean a mental "turn" or a character "turn" as well as a physical movement.