grep / nawk issue

Shell Programming and Scripting
1

I have a report which contains the following:

      Count  Value      %

         47 [  ]    69.12
         18 [0 ]    26.47
          3 [ 0]     4.41

I want to grep the total on the bottom [ ] brackets and store in a variable. However this may have a different figure everyday.

To read the [ 0] i do:

MATCH4=`grep "\[ 0\]" x.report.rpt | nawk '{print $1}'`

but how do i look for a number i.e. [ 3] , [ 10], [ 100] to get:

echo $MATCH4 - 3
echo $MATCH4 - 10
echo $MATCH4 - 100

etc...

---------- Post updated at 05:11 PM ---------- Previous update was at 05:10 PM ----------

[/COLOR]please disregard i wrote the post wrong i have since resolved it thanks

2 
sed -n '$s/.*\[ *\([0-9]*\)\].*/\1/p' reportfile