Variance % between two days ??

[#1]

Hi All,

I want to calculate varinace between two days but i am not able to do so.

T1:
LOAD * INLINE [
MMDD, ORGCODE, SALES
1005, 1521, 1029094
1009, 1521, 1030000
1016, 1515, 265522
1013, 1515, 265521
1005, 1515, 265520
1009, 1515, 265519
1016, 1770, 6746428
1013, 1770, 6746328

];

The flag which i am defining for the previous day giving me two values.

Thanks in Advance.

Ravi