UVA - 10370 - Above Average

import java.util.Scanner;


public class Main{
   
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int cases = s.nextInt();
        for(int i=0;i<cases;i++){
            int n=s.nextInt();
            int []arr=new int[n];
            int sum=0;
            float avg=0;
            for(int j=0;j<arr.length;j++){
                arr[j]=s.nextInt();
                sum+=arr[j];
            }
            avg=(float)sum/n;
            int count=0;
            for(int j=0;j<arr.length;j++){
                if(arr[j]>avg)
                    count++;
            }
            System.out.printf("%.3f%%%n", (float)count*100/n);
        }
    }
}