extranet/application/views/default/helpers/FormatPct.php

<?php
Class Zend_View_Helper_FormatPct extends Zend_View_Helper_Abstract {
    
    public function FormatPct($pct)
    {
        $pct = round($pct / 10, 0) * 10;
	    if ($pct == 0) $pct = 10;
	    return ($pct);
    }
}