1. Go to your "Privacy settings".
2. In the section Your activity go to Network News Updates. Here you can control in detail whether or not contacts are informed on their homepage whenever you change or update certain information in your profile, or if your join a group or are attending an event.
Please note: The advantage here is that your contacts will be able to see straight away if, for instance, you change your business mobile number. If you’re making lots of changes you might want to consider deactivating these settings temporarily so that your contacts don’t receive too many notifications all at once.