What is the role of Percent Contribution Margin (%CM) in adopting a particular pricing strategy? What are the benefits associated with the determination of the actual unit cost of a product or service

What is the role of Percent Contribution Margin (%CM) in adopting a particular pricing strategy? What are the benefits associated with the determination of the actual unit cost of a product or service

What is the role of Percent Contribution Margin (%CM) in adopting a particular pricing strategy? What are the benefits associated with the determination of the actual unit cost of a product or service, and what are the costs inherent in the %CM formula?  Explain your answer.