return roundToInt((getShortfallQty(false) / getTotalDemand()) * 100);
if(getTotalDemand() > 0.0d) { return roundToInt((getShortfallQty(false) / getTotalDemand()) * 100); } return 0.0d;
    public double getPercentShortfall() {        return roundToInt((getShortfallQty(false) / getTotalDemand()) * 100);    }