Display special price as percentage of savings pramotion in Magento 1

 <?php
 // Get the Special Price FROM date
 $specialPriceFromDate = Mage::getModel('catalog/product')->load($_product->getId())->getSpecialFromDate();
 // Get the Special Price TO date
 $specialPriceToDate = Mage::getModel('catalog/product')->load($_product->getId())->getSpecialToDate();
 // Get Current date
 $today = time();

 $savingsDollarValue = ($_product->getPrice() - $_product->getFinalPrice());
 $originalPrice = $_product->getPrice(); //get orginal price
 $discountPrice = $_product->getFinalPrice(); //get the discount amount
 $savings = $originalPrice - $discountPrice; //get the saving amount from orginal price - discount price
 $savingsPercentage = round(($savings / $originalPrice) * 100, 0); //get discount Percentage
 $productType = $_product->getTypeID();

	if ($savings):
	if ($today >= strtotime($specialPriceFromDate) && $today <= strtotime($specialPriceToDate) || $today >= strtotime($specialPriceFromDate) && is_null($specialPriceToDate)):
	?> 

		<p> <?php echo $this->__('EXTRA') ?><?php echo ' ' ?>
		<?php echo $this->getIdSuffix() ?> <?php echo $savingsPercentage, '%'; //display discount amount ?>
		<?php echo $this->__('Off') ?><?php echo ', ' ?><?php echo $this->__('untill') ?><?php echo ' ' ?>
		<?php echo $currentDate = Mage::getModel('core/date')->date('F dS', strtotime($specialPriceToDate)); ?>
		</p>

	<?php
	endif;
	endif;
 ?>

EXTRA 30% off, until September 29th