值1是零售价小数值2是2个零售成本之间的差值都是小数
=IIF(Fields!Prorated.Value is null,"",Fields!Prorated.Value)-Fields!Retail.Value fixxed !!!
Fixxed ^^
=IIF(IsNothing(Fields!Prorated.Value),"",(Fields!Prorated.Value-Fields!CurrentRetailPrice.Value)/Fields!Prorated.Value)
失败^^这个显示为%差异
这没有用于解决这个问题的另一种方式