The SEO Visibility loses value - what can I do now?!
The suite offers you several clues to find "the person responsible" for the descending of their visibility. Have a look at the SEO Visibility in the Organic Rankings.
1. View Google Updates in the SEO Visibility Chart to check if the drop was possibly caused by one of them.
2. Also look at the Winner & Loser Keywords and select the date the drop was on from the Loser Keywords. Now compare the loss of the loser keywords or URL with that of the domain to determine a possible correlation.
3. You can also navigate to the Winner & Loser Keywords in the Search Experience and look there for possible correlations.
Screenshot 1: Visibility loss on 03/24/2019
Screenshot 2: Google Update that may have caused the loss
Screenshot 3: List of Organic Loser Keywords of 03/24/2019.
Also, check out this workflow to investigate and quickly counteract declining SEO visibility: Exploring the Declining SEO Traffic