Wordpress Woocommerce WCDPD_Product_Pricing customize output

functions.php

function get_discounted_price_custom( $product = null ) {

	if ( $product == null ) {
		return false;
	}

	if ( $product->is_type( 'variable' ) ) {
		$default_attributes = $product->get_variation_default_attributes();
		$variation_id = iconic_find_matching_product_variation( $product, $default_attributes );
		$product = wc_get_product( $variation_id );
	} else {
		$default_attributes = $product->get_default_attributes();
	}
	$test_price = RP_WCDPD_Product_Pricing::test_product_price( $product, 1, $default_attributes, true );

	if ( $test_price !== false && $test_price !== null ) {
		$price = $test_price;
		$sale_price = $price['price'];
		$regular_price = $price['data']['wc_price'];
		$sale = round( ( ($regular_price - $sale_price) / $regular_price ) * 100 );
	} else {
		$sale = null;
	}
	return $sale;
}

function iconic_find_matching_product_variation( $product, $attributes ) {

	foreach ( $attributes as $key => $value ) {
		if ( strpos( $key, 'attribute_' ) === 0 ) {
			continue;
		}

		unset( $attributes[$key] );
		$attributes[sprintf( 'attribute_%s', $key )] = $value;
	}

	if ( class_exists( 'WC_Data_Store' ) ) {

		$data_store = WC_Data_Store::load( 'product' );
		return $data_store->find_matching_product_variation( $product, $attributes );
	} else {

		return $product->get_matching_variation( $attributes );
	}
}