To change the password for your Crunchbase account, click on the Account icon in the upper right-hand corner, then select Account Settings from the dropdown.
Under the Your Info tab on the left hand side, you'll see the option to Change Password in the Personal Information section.
Note: if SSO (single sign-on) has been enabled for Crunchbase, team members will not be able to change their password or email within Crunchbase Account Settings.