/**
  * Retrieve tax with percent html content
  *
  * @param \Magento\Framework\DataObject $item
  * @return string
  */
 public function displayTaxPercent(\Magento\Framework\DataObject $item)
 {
     if ($item->getTaxPercent()) {
         return sprintf('%s%%', $item->getTaxPercent() + 0);
     } else {
         return '0%';
     }
 }