Amount until free shipping progress bar

Hello developers,

I run the salient theme of woocommerce and i would like to have a new feature implemented in my mini-cart.
I want users to see a progress bar untill free shipping like the image attached. The difficulty lies in getting this progress bar and amounts updated when users change quantities and products within the mini-cart.

If you think you might be able to help me, please give me a qoute.

Items to note:
* Salient theme on Wordpress
* Staging site available to work from (www.staging.dietrevolution.nl)
* plugin code snippets running to include custom functions
* hosting at WPX