Cart Discount Percent of Total

If coupons have been applied to the current cart, this outputs the value of that discount as a percentage of the total.

See also:

• cart_discount,
• cart_total,
• cart_discount_percent_of_subtotal,
• add_coupon_form,
• discounts

Parameters

This tag has no tag-specific parameters.

It supports global numeric output formatting parameters. See Global Number Formatting.

Behavior and Constraints

Code-backed calculation:

cart_discount_percent_of_total = (cart->discount() / cart->total()) * 100

Notes:

• This is an immediate-execution single tag, not a form tag.
• Output depends on the current cart totals at render time.
• cart->total() already includes CartThrob total calculations (subtotal/tax/shipping/discount logic).
• This tag uses the raw formula above and does not add extra guard logic.

Example

{exp:cartthrob:cart_discount_percent_of_total}