Parsing XML script

I have the following code and need a regex that will pick out the 0% ( I want to be able to check the value of just this one table).  I don't want to get any of the other "percent values".  Keep in mind the "KB" values change as well. I was thinking I could load the entire xml code into an array and go down to "Used" on it's own line then search for the next percent figure like (\d+)|% or something like that.  There has to be a better way!  :-)
 

              Config (Broker Servers, Territories, Brokers, Doc Types, Stats) & Data (Client Queues, Documents, Logs)
                          <script>writeEndTD();</script>
      </tr>
        <script>swapRows();</script>
        <tr>
            <script>writeTD('rowdata-r');</script>
          Total Storage
          <script>writeEndTD();writeTDspan('row-l', 3);</script>
      
        <table width="100%">
        <tr>
          <td colspan=3></td><td width="100%"></td>
        </tr>
        <tr>
          <script>swapRows();writeTDnowrap('rowdata-r');</script>
            Max. Available
          <script>writeEndTD(); writeTDnowrap('rowdata-r');</script>
            10485760 KB
          <script>writeEndTD(); writeTDnowrap('rowdata-r');</script>
            100%
          <script>writeEndTD(); writeTD('rowdata-l');</script>
            <table width="100%" cellpadding="0">
            <tr>
                <td class="graph-free"><img border="0" src="../images/pixel.gif" height="6" width="1"></td>
            </tr>
          </table>
          <script>writeEndTD();</script>
        </tr>

        <tr>
          <script>writeTDnowrap('rowdata-r');</script>
            Used
          <script>writeEndTD(); writeTDnowrap('rowdata-r');</script>
            2783 KB
          <script>writeEndTD(); writeTDnowrap('rowdata-r');</script>
            0%
          <script>writeEndTD(); writeTD('rowdata-l');</script>

          <table width="0%" cellpadding="0">
            <tr>
                <td class="graph-used"><img border="0" src="../images/pixel.gif" height="6" width="1"></td>
            </tr>
          </table>
          <script>writeEndTD();</script>
        </tr>Start Free Trial