int x; //this gets the number of days left.
 int y = 100; 
 int z; //final result

 
 
 
 public void progressBar1() {
 
 ProgressBar progressBar = (ProgressBar) findViewById(R.id.progressBarId);
 
 String[] projection = { HabitTable.COLUMN_NAME};
        Cursor cursor = getContentResolver().query(uri, projection, null, null,
                null);
 
 x = cursor.getString(cursor
                    .getColumnIndexOrThrow(HabitTable.DAYSLEFT);
	
  int z = 0;	
					
   if (x == 0) {
   
   z = 100;
   
   } else {
   
   z = 100/(1+x)
   
  }

}