A method, non-transitory computer readable medium, and apparatus that quantitatively assesses the impact of a project change request to software quality including determining at least one initial project request defect value based on an initial project request effort value and a defect insertion rate, determining at least one project change request defect value based on a project change request effort value and the defect insertion rate, comparing at least one project change request defect value to at least one initial project request defect value, and providing a quality impact value based on the result of the comparison.