javascript Calculate the percentage value of two integers_javascript skills

Copy code The code is as follows:

///Calculate the percentage value of two integers
function GetPercent (num, total) {
num = parseFloat(num);
total = parseFloat(total);
if (isNaN(num) || isNaN(total)) {
return "-" ;
}
return total <= 0 ? "0%" : (Math.round(num / total * 10000) / 100.00 "%");
}