Reply To: Variable product

Hello,

Try to add the following PHP code in the function.php of the child theme.

add_filter( 'woocommerce_get_price_html',     'change_displayed_sale_price_html', 10, 2 );
function change_displayed_sale_price_html( $price, $product ) {
     // Only on sale products on frontend and excluding min/max price on variable products
    if( $product->is_on_sale() && ! is_admin() && ! $product->is_type('variable')){
         // Get product prices
         $regular_price = (float) $product->get_regular_price(); // Regular price
         $sale_price = (float) $product->get_price(); // Active price (the "Sale price" when on-sale)

         // "Saving Percentage" calculation and formatting
         $precision = 1; // Max number of decimals
         $saving_percentage = round( 100 - ( $sale_price / $regular_price * 100 ), 1 ) . '%';

         // Append to the formated html price
         $price .= sprintf( __('<p class="saved-sale">You Save: %s</p>', 'woocommerce' ), $saving_percentage );
    }
    return $price;
}

Best Regards.