Detta kan vara till stor hjälp för dig
while($row = mysqli_fetch_assoc($result)) {
$data[$row['position']]['total'][]=$row['votes'];
$data[$row['position']][]=$row;
}
foreach($data as $k=>$v){
echo '<p>'.$k.'</p>';
echo '<table border="1">';
$total_votes=array_sum($v['total']);
foreach($v as $kk=>$vv){
if($kk!=='total'){
$percentage=round($vv['votes']/$total_votes*100,2);
echo '<tr><td>'.$vv['tean'].'</td><td>'.$vv['votes'].'</td><td>'.$percentage.'%</td></tr>';
}
}
echo '</table>';
}