If we have past all month file and , new file with current month then how we calculate the that current month from one file and last month from all month file
Percent difference
Hi,
data old new;
infile datalines dlm=",";
format month x 2.;
input month x;
if month=4 then output new;
else output old;
datalines;
1,10,
2,5,
3,12,
4,15
;
run;
data want;
set old new end=a;
y=lag(x);
if a then do;
diff=100*(x-y)/y;
output;
end;
drop y;
run;
Please supply example data in a data step so we have something to play with.
Hi,
data old new;
infile datalines dlm=",";
format month x 2.;
input month x;
if month=4 then output new;
else output old;
datalines;
1,10,
2,5,
3,12,
4,15
;
run;
data want;
set old new end=a;
y=lag(x);
if a then do;
diff=100*(x-y)/y;
output;
end;
drop y;
run;
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