public function render(Varien_Object $job)
 {
     $percent = 0;
     $denominator = $job->getNumGeneratedUrls() + $job->getNumLoggedUrls() + $job->getNumCustomUrls();
     if ($denominator > 0) {
         $percent = $job->getNumCrawledUrls() / $denominator * 100;
     }
     return round($percent) . '%';
 }