Include % VAT in the title of the VAT field

Hello,
When generating a pdf with the invoice, in the VAT field at the end of the page I need the name to include in parentheses the % of VAT that is applied in Spain. In Woocommerce I modify the VAT title and name it “VAT 21%”, and in the Woocommerce cart the change is applied to me, but in the plugin when generating a PDF invoice it is not applied to me. Can you tell me how to add this text manually in a custom template, for example? Thank you so much! Luis.