Facebook Ads
Total engagements = share + reaction + comment;
Engagement rate = total_engagements / reach * 100;
Total engagements = total_comments + total_reactions + total_shares;
Engagement rate = total_engagements / total_reach * 100;
Engaged users = comments + likes;
Engagement rate = engagement / followers * 100;
Engagements = retweet_count + favorite_count;
Engagement rate = engagements / count / followers * 100;
Twitter Ads
Engagement rate = (engagements / impressions) * 100
Linkedin Ads
Average Engagement = (chargeableClicks + nonchargeableClicks) / impressions * 100;