Percentage calculation

Hi, im working on a project.

I'm having an issue with a script calculating the percentage. I kind of works, but not really, if you understand. here is my script:

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 
 public class spawner : MonoBehaviour {
     public Transform LeftSpawn;
     public Transform RightSpawn;
 
     public GameObject LeftCube;
     public GameObject RightCube;
 
     public Text LeftText;
     public Text RightText;
 
     public int LeftCount;
     public int RightCount;
     public int TotalCount;
 
     public float LeftFraction;
     public float RightFraction;
     public float LeftPercentage;
     public float RightPercentage;
 
 
 
     // Use this for initialization
     void Start () {
         LeftCount = 0;
         RightCount = 0;
         TotalCount = 0;
     
     }
     
     // Update is called once per frame
     void Update () {
         // if both right and left have at least 1 cube each
         if (LeftCount != 0 && RightCount != 0) {
             //the total amount of cubes
             TotalCount = LeftCount + RightCount;
             // how much out of the total amount is left?
             LeftFraction = TotalCount / LeftCount;
             //how much out of the total amount is right?
             RightFraction = TotalCount / RightCount;
             //calculate how much (in percentage) there are left cubes
             LeftPercentage = 100 / LeftFraction;
             // same with right cubes
             RightPercentage = 100 / RightFraction;
             // show the percentage
             LeftText.text = LeftPercentage.ToString () + "%";
             //ditto
             RightText.text = RightPercentage.ToString () + "%";
         }
 
 
             
         
     
     
         // if "a" is pressed
         if (Input.GetKeyDown (KeyCode.A)) {
             // spawn cube at designated transform
             Instantiate (LeftCube, LeftSpawn);
             // add one to leftcount and totalcount, confirm everything happenned
             LeftCount += 1;
             TotalCount += 1;
             Debug.Log ("done");
 
         }
         //if "d" is pressed
         if (Input.GetKeyDown (KeyCode.D)) {
             //spawn cube at designated transform
             Instantiate (RightCube, RightSpawn);
             // add one to rightcount and total count, confirm it happenned
             RightCount += 1;
             TotalCount += 1;
             Debug.Log ("done");
         }
     }
     
 }
 

here is my script in action:

here, the leftcube to rightcube ratio is 5:2

the script only works if both sides have an equal number squares, putting "50%" on each side.

Can someone help me?