Change the Decimal symbol/separator to "," and run Excel export for the RadPivotGrid. Note that all "0,00" cells are displayed as "1" in Excel and all decimal values are displayed without decimal separator. Another scenario is when you change the Format in the Regional settings to Russia. Then, when exporting data, the decimal separator for the GrandTotal column is not correct ".", instead of ",". However, for the data cells it is OK.