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Reach Rate (RR) = (Reach_Number of Fans) x 100 = % ​ Engagement Rate (ER) = (Total Number of Reactions, Comments & Shares) _ Number of Users Reached) x 100 = % ​

chilli-mediareach-rate-rr-reach-number-of-fans-x-100-engagement-rate-er-total-number-of-reactions-comments-amp-shares-number-of-users-reached-x-100