We track critical changes to each event and account in the activity log. To view an activity log, go to the details page for the event or account. Click the more_vert menu icon and select Activity Log.
The activity log lists an entry for each critical change. Underneath each action taken is the date and time of the action as well as the user who took the action.
For a list of all changes that are tracked, please see What is tracked in the activity log?