Contribution Analysis

In past forums I found answers in the form of links to this question, but they were all dead. So I'm hoping to get some guidance. I am trying to see the economic contribution of a particular industry (217) in my study area. What is the best way to do this? When I plug in the employment data as the input in the Industry Activity event, part of the output is it affecting jobs in this sector by a totally different number. What is the best way to see how an existing industry (currently) impacts a selected study area?