Product discount percentage is not showing

Question

I've added the following code to the checkout page (item.phtml).

$_regularPrice = $_product->getPrice(); 
$_finalPrice = $_product->getFinalPrice();
if($_finalPrice < $_regularPrice):
    $special_percent = ceil(100 - (( 100/$_regularPrice ) * $_finalPrice )); echo $special_percent.'%'; else: echo '0%'; 
endif;

This code is showing proper percentage if I add special price to the product. But it is not working if I add Shopping Cart Pricing Rule. The output is always 0% if I add a Shopping Cart Pricing Rule, is there a way to do the same for Shopping Cart Pricing Rule?

Thanks.

Answer 1

Final price does not respect discount. Because final price is the PRODUCT attribute, and discount is the CART ITEM attribute. Just use the $item, not $product.

discount: $item->getDiscountAmount()

original price: $item->getCalculationPrice();