xSt.get_Range(oExcel.Cells[2, 5], oExcel.Cells[n + 3, 5]).NumberFormat = "#0.00%";
//文本：vnd.ms-excel.numberformat：@
//日期：vnd.ms-excel.numberformat：yyyy/mm/dd
//数字：vnd.ms-excel.numberformat：#,##0.00
//货币：vnd.ms-excel.numberformat：￥#,##0.00
//百分比：vnd.ms-excel.numberformat：#0.00%