lerp rotation on button press?

I really need your help guys. Im total beginner. Is there a script which does the same like this but with rotation instead of position?

 using UnityEngine;
 using System.Collections;
 
 public class lerp : MonoBehaviour 
 {
     private Vector3 newPosition;
 
     void Awake ()
     {
         newPosition = transform.position;
     }
 
     void Update ()
     {
         PositionChanging ();
     }
 
     void PositionChanging ()
     {
         Vector3 positionA = new Vector3(-15037,24,23166);
         Vector3 positionB = new Vector3(-15037,40,23166);
 
         if (Input.GetKeyDown (KeyCode.Q))
             newPosition = positionA;
         if (Input.GetKeyDown (KeyCode.E))
             newPosition = positionB;
 
         transform.position = Vector3.Lerp (transform.position, newPosition, Time.deltaTime);
     }
 
 }