A simple function to calculate percentage without checking the divisor for zero. Also includes precision point.

calculatePercentage.php

<?php

/**
 * A simple function to calculate percentage without checking the divisor for zero.
 * Also includes precision point
 *
 * @param $got
 * @param $out
 * @param int $precision
 * @return float|int
 */
function calcPercentage($dividend, $divisor, $precision=0){
    if($divisor<=0){
        return 0;
    }

    return round($dividend/$divisor*100,$precision);
}