protected function calcPercentages(array $total, array $names)
{
$percents = [];
$all = Arr::get($total, 'all');
foreach ($total as $level => $count) {
$percents[$level] = ['name' => $names[$level], 'count' => $count, 'percent' => $all ? round($count / $all * 100, 2) : 0];
}
return $percents;
}