Deletion of audit records/events and impact on database

Deletion of audit records/events and impact on database

We are planning to change the setting 'Purge Resource Audit Records' in Password Manager, currently this is set for multiple years (1000+ days) and are going the set it to 366 days (1 year) for both resource and user audit.
Wat will be the impact on the database and server?
We are using a dedicated SQL database server with the recovery model set to 'Full'.

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