สอบถาม การทำแผนภูมิวงกลม จากตารางที่ดึงข้อมูลมาใช้สรุปผล

<form name="frmSearch" method="get" action="<?php echo $_SERVER['SCRIPT_NAME'];?>">
  <table width="45%" border="0" align="center">
    <tr>
      <td width="9%" ><i class="icon-calendar"></i>&nbsp;ตั้งแต่</td>
      <td width="1%" height="1%"></td>
      <td width="9%"><i class="icon-calendar"></i>&nbsp;จนถึง</td>
      <td width="1%" ></td>
    </tr>
    <tr>
      <td width="9%"><input type="text" name="datestart" id="dateStart" class="form-control" value="<?php echo $_GET["datestart"];?>"/></td>
      <td width="1%"align="center"><strong>to&nbsp;&nbsp;&nbsp;</strong></td>
      <td width="9%"><input type="text" name="dateend" id="dateEnd" class="form-control" value="<?php echo $_GET["dateend"];?>"/></td>
	   <td width="7%" rowspan="2"width="10%" ><button type="submit" name="button" id="button" class="btn btn-success"/>ค้นหา</button></td>
    </tr>
  </table>
</form>

  </br>
  <table width="75%" border="1" cellpadding="0" cellspacing="0" align="center" id="datatable">
  <tr>
    <td height="35" colspan="4" bgcolor="#CCFF00"><div align="center"><strong>RESULT OF ENGINEERING WORK</strong></div></td>
  </tr>
  <tr>
    <td width="15%" height="25" bgcolor="#FFFFFF"><div align="center">&nbsp;</div></td>
    <td width="12%" height="25" bgcolor="#FFFFFF"><div align="center">ชนิดใบแจ้งซ่อม</div></td>
	<td width="12%" height="25" bgcolor="#FFFFFF"><div align="center">จำนวนงานที่แล้วเสร็จ</div></td>
	<td width="20%" height="25" bgcolor="#FFFFFF"><div align="center">PERCENT COMPLETED WORK</div></td>
  </tr>
	
  <?php
  if($_GET["datestart"] != "")
  {
	$objConnect = mysql_connect("localhost","root","password") or die("Error Connect to Database");
	$objDB = mysql_select_db("it");
	mysql_query("SET NAMES UTF8");


	$date_start= $_GET["datestart"];
	$date_end= $_GET["dateend"];
	$Status="สำเร็จ";

	$sql="SELECT * FROM  addjob  WHERE dateInput  BETWEEN '$date_start' AND '$date_end' GROUP BY type_work ";
	$dbquery= mysql_query($sql);
	$num_rows= mysql_num_rows($dbquery);
		$i=0;
		$j=0;
	while ($i<$num_rows){  
		$result=mysql_fetch_array($dbquery); 
		$Type_work =$result['type_work'];

		$sql2="SELECT * FROM  addjob  WHERE type_work = '$Type_work' AND  dateInput   BETWEEN '$date_start' AND '$date_end' ";
		$dbquery2= mysql_query($sql2);
		$num_rows2= mysql_num_rows($dbquery2);

		$sql3="SELECT * FROM  addjob  WHERE type_work = '$Type_work' AND status ='$Status' AND  dateInput   BETWEEN '$date_start' AND '$date_end'";
		$dbquery3= mysql_query($sql3);
		$num_rows3= mysql_num_rows($dbquery3);
	?>
  <tr>
    <td width="274" align="left" bgcolor="#66FFCC"><?="&nbsp;&nbsp;&nbsp;&nbsp;$Type_work"?></td>
    <td width="210" align="center" bgcolor="#66FFCC"><?=$num_rows2?></td>
	<td width="210" align="center" bgcolor="#66FFCC"><?=$num_rows3?></td>
<?php $pc =($num_rows3/$num_rows2)*100 ?>
<?php 
	$sum_g = "{name: '$Type_work' ,y: $num_rows2} ,";
	echo $sum_g;
 ?>
	<td width="210" align="center" bgcolor="#66FFCC"><?="$pc%"?></td>
      </tr>
<?php 
	  $sum_numrows+=$num_rows2;
	  $sum_numrows2+=$num_rows3;
		$i++;
		$j++;
		}	
		
	?>
  <tr>
    <td  width="274" align="left" bgcolor="#FFFFFF"><div align="center">ผลรวมทั้งหมด</div></td>
    <td width="210" align="center" bgcolor="#FFCC00"><?="$sum_numrows&nbsp;งาน"?></td>
	<td width="210" align="center" bgcolor="#FFCC00"><?="$sum_numrows2&nbsp;งาน"?></td>
		<?php 
		if($sum_numrows2 != ""){
			  $pc2= ($sum_numrows2/$sum_numrows)*100 ;
			  $pcf2= round($pc2,2);
		}
		?>
	<td width="210" align="center" bgcolor="#FFCC00"><?="$pcf2%"?></td>
  </tr>
   <?php 
 } ?>
  
  </table>
  
  </br></br>

  <?php 
  echo $sum_g;  ?>

  <div style="width:80%;margin:auto;">
    <div id="hc_container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>
</div>
 <script src="http://code.highcharts.com/highcharts.js"></script>
 <script src="http://code.highcharts.com/modules/exporting.js"></script>
 <script type="text/javascript">
$(function () {
    $('#hc_container').highcharts({
        chart: {
        plotBackgroundColor: null,
        plotBorderWidth: null,
        plotShadow: false,
        type: 'pie'
    },
    title: {
        text: 'RESULT'
    },
    tooltip: {
        pointFormat: '{series.name}: <b>{point.percentage:.1f}%</b>'
    },
    plotOptions: {
        pie: {
            allowPointSelect: true,
            cursor: 'pointer',
            dataLabels: {
                enabled: false
            },
            showInLegend: true
        }
    },
    series: [{
        name: 'Brands',
        colorByPoint: true,
        data: [ <?php echo $sum_g?> ]
    }]
    });
});
</script>

        data: [
            ['PM', 45.0],
            ['ไฟฟ้า', 26.8],
            {
                name: 'ช่างยนต์',
                y: 12.8,
                sliced: true,
                selected: true
            },
            ['ปะปา', 8.5]
        ]