Display discount applied

This plugin applies the discount as we’d like it. However it does not display the value of the discount.
For example: a customer buys 100 cases of soda @1200= $120,000
If the customer opts to pick up at our sales outlet, a discount should be applied [-100*qty]= -$10,000.
So the customer should pay $110,000.
The plugin does that calculation correctly but I just can’t figure out how to get it to display the discount given or if its even possible.

Thanks in advance

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