Hi, I have an issues with sale labels. They're not showing. I have configured catalog price rule, there are 2 prices under product (old and special), but label with percentage isn't there. I have Porto theme installed, there are product label options, I tried to turn on "Show sale label" and also to tun it off, nothing happen.
In public_html/app/design/frontend/Smartwave/porto_child/Magento_Catalog/templates/product/list.phtml is code for sale and new label: