Tests reading a file containing this ptg.
HSSFWorkbook workbook = loadWorkbook("PercentPtg.xls");
HSSFSheet sheet = workbook.getSheetAt(0);
assertEquals("Wrong numeric value for original number", 53000.0,
sheet.getRow(0).getCell((short) 0).getNumericCellValue(), 0.0);
assertEquals("Wrong numeric value for percent formula result", 5300.0,
sheet.getRow(1).getCell((short) 0).getNumericCellValue(), 0.0);
assertEquals("Wrong formula string for percent formula", "A1*10%",
sheet.getRow(1).getCell((short) 0).getCellFormula());