I need to show a discounted sum as a percentage of regular price using in WooCommerce. Original and stroked price + discounted price (of 10%).
Eg.: <del>100</del> 90

I've tried a lot of plugins and they discount effectively, but I need to SHOW to customers (in product and category pages) the original sum (regular price) ***and*** the discounted price (the real prices are already managed by a rental plugin).