The output of this exercise where the project manager is comparing the cost of the project to the cost savings the project will produce when it is complete will produce the return on investment (ROI). ROI is a financial metric that measures the profitability or efficiency of an investment by comparing its benefits or returns to its costs. ROI can help to evaluate the value or worth of a project and support decision making and prioritization.
ROI is calculated by dividing the net benefits (benefits minus costs) by the total costs and multiplying by 100 to get a percentage.