int percentDiffForMaxScale, boolean greenForIncrease,
boolean subTitle, boolean showDifference) {
PiePlot plot = new PiePlot(dataset);
plot.setLabelGenerator(new StandardPieSectionLabelGenerator());
plot.setInsets(new RectangleInsets(0.0, 5.0, 5.0, 5.0));
plot.setToolTipGenerator(new StandardPieToolTipGenerator());
List<Comparable> keys = dataset.getKeys();
DefaultPieDataset series = null;