Comparing two spreadsheet data

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Saturday January 12, 2013
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January 25, 2013
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Hello,

If I have an original sheet comprising of 8 columns and a number of other row items with subtotals in between.
The next sheet contains the same format but an updated one with some numbers changing.

How can i get to know the changes made in the updated sheet from the original one.

The list contains only numbers and the top rows are fixed titles with alphabetical characters. Same is the first Column with alphabets titles.
Others are numbers and subtotals generated using formulas.