Divide the Average Number of Likes on Posts Four Through Ten by the Total Number of Followers: Once you have the average number of likes in post four through ten, you divide that number by the total number of followers of the account, and you get the engagement rate.
What happens after 10k followers on Instagram?
Once you have 10k followers, Instagram will make it easier for you to get people to your website via Stories with the swipe up to link feature. Swipe up is the only way to get a direct link from your Instagram to your other web properties. And, it’s available in STORIES, if you have 10k followers.