Percentage price is part of the advanced calculation add-on
Documentation
Percentage price
In this article
Option percentage price
You can charge percentage of total configuration cost or percentage of specified field cost for your configuration choice fields.
Simply head over to any WCB choice edit page and set the price type to “percentage”.
Now you will see two price fields show up for each option.
Next, select configuration field in the percentage field value and enter numeric percentage value in the percentage input.
Save the choice
