Every time anything in a record is changed, the change is recorded in the Audit Logs entity so that it can be reviewed upon at a later stage.
Logs can be viewed for any entity and record using the View Logs option for both.
View Logs command can be found in the header for every entity in the dropdown section of ellipsis button.
Clicking on View Logs will take you to Audit logs for that particular entity.
View Logs command can be found in the dropdown of ellipsis button for every record. Clicking on the ellipsis button will show the dropdown.
Click on View Logs to view the logs regarding that record.