Allignment input file

Guys,

I have a requirement as below

36%/
55%/var
82%/tmp
74%/opt

now i want the output to be

---------------------------------
Disk%    Mount
---------------------------------
36%      /
55%      var
82%      tmp
74%      opt
----------------------------------------

I have used awk command to get this done. But i am not able to get the exact output.
Could you please help me anyone?

Thanks

This is basic functionality...

awk 'BEGIN {print "---------------------------------";print "Disk% Mount";print "---------------------------------"} {print} END {print "---------------------------------"}' file

or

awk 'BEGIN {
	print "---------------------------------"
	print "Disk% Mount"
	print "---------------------------------"}
	{print} 
	END {
	print "---------------------------------"}' file
sed 's/^\([0-9]\{1,2\}%\)\/$/\1 \//; s/^\([0-9]\{1,2\}%\)\/\([a-z]*\)$/\1 \2/' file
awk -F '/' '$2=="" {$2 = "/"} {print $1 "\t" $2}' file

Guys thanks for ur help!!!!