List records that are changed

[#1]

Hi all,

I got two months records as listed below

Table Jan:

cno   category     amount

1       gm1            234

2       gm2            535

3       gm3            789

4       gm4            456

Table  feb:

cno   category     amount

1       gm1            234

2       gm3            535

3       gm3            789

4       gm4            456

how can I show change in category  in a report. Change occurred in Record no 2

Thanks

JK