Whats the formula to look at data in precentages in fixed periods

how do I calculate a continous percentage return of two data points at fixed
intervals? example : data set={12,50,03,59,22,....} , fixed
interval=2periods.
[(12-03)/12], [(50-59)/50], [(03-22)/03],....I'd like to do this in Excel 03

"donald" wrote:
> how do I calculate a continous percentage return
> of two data points at fixed intervals?
> example : data set={12,50,03,59,22,....} ,
> fixed interval=2periods.
> [(12-03)/12], [(50-59)/50], [(03-22)/03],

Assuming data is in A2 down: 12,50,3,59,22,...
In B2: =(A2-A4)/A2
B2 formatted as percentage, then copied down
--
Max
Singapore
http://savefile.com/projects/236895
xdemechanik
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