A business process needs to be constantly reviewed to accommodate new business requirements and regulations. To this end, it is important to manage the impact of this review on a process by determining which parts are affected and more critically estimating the overall cost of this review. In this paper we present an approach to manage the changes in a process. We model a process as a set of business rules that are structured using the ECAPE formalism standing for Event, Condition, Action, Post–condition, and post-Event This formalism allows translating a process into a graph of rules that is used for two types of analysis: business processes agility and cost of changes. This cost is based on our Rule Change Cost Model (R2CM).