Calculate Percentage for bubble Radius

var radiusMin:int = 50;
var radiusMax:int = 100;
var readiusCalc:Number = 0;

arryAll = sortCollection(arryAll);

var minVal:Number = Number(ObjectUtil.toString(arryAll[0][‘revenue’]).toString()); ;
var maxVal:Number = Number(ObjectUtil.toString(arryAll[arryAll.length-1][‘revenue’]).toString())

readiusCalc = currentVal * 100 / maxVal;