Instagram users have it easy, your Profile page will show who is actively following you so if the person of interest is not on that list, you know you've been unfollowed. You won't, however, know that you've been muted. Facebook makes things a little more difficult. Click to open your Facebook profile, then click on Followers. This option will not appear unless your account is Public. Scroll through the list of those who are following you and compare it to your friends' list.