There are many ways to measure how your Facebook posts are doing – including reach, impressions, referral traffic and click through rate. But really, the best way to tell how a post is doing, is by the number of engagements. Engagement measures the number of times someone took action on your post. This would include clicking a link, sharing your post, making a reaction, or leaving a comment.
Engagement is one of the most important Facebook metrics you can track. Engagement is a sign that people actually like the content. Another reason engagement is so valuable is the engagement may give your posts more exposure to a broader audience.
Facebook uses an algorithm to determine where your posts show up in your followers’ News Feed. The purpose of the algorithm is to surface posts that users are most likely to be interested in. If one of your posts receives a lot of engagement, that signals to Facebook that it’s popular, so they’ll be more likely to surface it to more of your followers.
View “Page Insights” on your Facebook page, where you can see all your posts and how they are doing. This will give you a good insight of what is working and what is not.