rem: var p = this / (total / 100); if (!fmt) return Math.round(p * 100) / 100; 
add: if (!total) return (0).format(fmt); var p = this / (total / 100); 
context: Number.prototype.toPercent = function(total, fmt) {	var p = this / (total / 100);    if (!fmt)        return Math.round(p * 100) / 100;    return p.format(fmt);};
meta: 2504	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/2504/f2cc5103b494a44d7fff5433104791efc11b2009/Number.js/buggy/core/Number.js