New Post: solution for numbers stored as text

I am generating one report but it is showing error message with values like 23,222 or values with % symbol.It is showing error as numbers stored as text.Manually i am converting there values to Number.I need a solution for this.

My code is :-

    include_once("system/application/libraries/PHP_Excel/PHPExcel.php");
    $excel = new PHPExcel(); // Create the object
    $rowval = explode("\n",$data); // Splitting the data to get the rows
    $rowcount = count($rowval); // Getting the count of rows
    $colcount = count($fields); // Getting the field/column count

    // Write the heading value to the xl sheet start
    for($col = 0; $col < $colcount; $col++){
        $excel->getActiveSheet()->setCellValueByColumnAndRow($col, 1, $fields[$col]);
    }

    // style array for the heading
    $styleArray = array(
                        'font' => array(
                        'bold' => true,
                        )
                ); // style array for the heading

    // applying style for the heading to the entire first row
    $excel->getActiveSheet()->getStyle('A1:XFD1')->applyFromArray($styleArray);

    // Write the values to the xl sheet
    for($i = 0; $i < $rowcount; $i++){
        $cellval = explode("\t", $rowval[$i]);
        $colcount = count($cellval);
        for($j = 0; $j < $colcount; $j++){
            if(!empty($cellval[$j])){

                $excel->getActiveSheet()->setCellValueByColumnAndRow($j, ($i+2), $cellval[$j]);
            }
        }
    }

    $objWriter = PHPExcel_IOFactory::createWriter($excel, 'Excel2007'); 

Thanks
Harsh