Hello Every one
I have data on Stock prices and I want to calculate the return on all the
stocks
and then replace all the stock prices with the returns

can any one tell me how to do

My data is in the format given below

Date              Stock1  Stock2  Stock3
01/01/2000        1          2          3
01/02/2000        5          6          7
01/03/2000        1          2          3
01/04/2000        5          6          7


Thanks

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