You can change your business number by contacting your phone provider. They can help you to choose a new number that fits your criteria and how you want customers to reach you. It's a good idea to keep a consistent business phone number so that customers and other businesses know how to contact you. However, you can change your business phone number if you are changing location and want your number to change between local area codes. You may also want to expand your business and appeal to a national customer base along with existing customers.