How to change the 'Save Tag' on the product page from USD to %?
If you are on the 1.3 version you will need to do this manually.
{% assign wc_sale_type = 'money' %} - for amounts
{% assign wc_sale_type = 'percentage' %} - for % sign
We need to make change to product-card-grid.liquid and product-template.liquid
In version 1.4 you get an option in the customizer.