Avoid discussing the goals that you have failed to meet as much as you can unless you are going to discuss what you did to improve it the next month. I would not discuss any KPIs or goals that are irrelevant to the role you're hiring for, if the role you had four years ago relates more to the role you are applying for now then discuss that one.

Always start by discussing the two goals/KPIs that you always tend to exceed or have continuously met every month. Discuss how you stay on track every month so you don't fall behind. State when you review your goals every month or if you do it every day. Tell them where you keep your goals and how you break them down so you know you will meet or exceed them.

"In my last role, which was most similar to this one, my KPIs were making certain that I generated six new clients each month and exceeded 10% of my monthly goal. In order to make sure that I stayed on track, I always broke down my monthly goal into getting to 60% of my goal in the first half so I had a good head start leading into the last two weeks of the month. My goals were always posted on my dashboard and I had it on a dry erase board at my desk for easy tracking. I updated it every morning so I knew if I needed to make additional calls if I wasn't on track for my monthly goal."