Mathf.DeltaAngle

public static float DeltaAngle (float current, float target);

설명

Calculates the shortest difference between two given angles given in degrees.

using UnityEngine;

public class Example : MonoBehaviour
{
    void Start()
    {
        // Prints 90
        Debug.Log(Mathf.DeltaAngle(1080, 90));
    }
}