No specific link, but the groups/people who I follow have all reported losing 100's of followers in the past 24 hours. I have lost nearly 500 on one project that I work on.
The project in question had just over 15K followers prior to the election and was following ~11K
The project now has just over 8K followers and the following is just below 9K
Followers lost ~46%
Following lost ~21%
It's been a week and these accounts were not politically associated, they were business-centric.
UPDATE: I did locate a couple of articles discussing the exodus (and Bluesky's rise) but none with hard data and all with too much political wrapping paper.