How can you tell if the content you have posted was successful or not?

"In one of my previous roles, I worked with my team to produce a special online report that we distributed to existing subscribers and promoted to prospects. I was able to show upper management that this project was highly successful based on key metrics that I pulled using Google Analytics. These KPIs included opens, shares, click-through rates, traffic, and conversions. The report resulted in numerous demo requests, on-site appointments, and several conversions to both trial and paid subscriptions."