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I don't know how much I understood your problem but here I have created one view for you.
You can see there are three line in line chart.
1. Original Model
2. New Model of sales with 10% Commission(1st Model)
3. New Model of sales with 20% Commission (2nd Model)
Please let me know if you have more question on this or if I misunderstood then please let me know.
Please mark correct and helpful if it works for you