The economics major’s upper division requirements are 100A or 101A, 100B or 101B, 140 or 141, and five electives. Note that the required courses do use math and statistics, and are typical requirements for economics majors (and the business major has required courses similar to 100A and 100B), but less math courses can be chosen for the electives: https://www.econ.berkeley.edu/undergrad/current/major-requirements .
However, the marketing and branding courses in UGBA (106, 160-169) do not have obvious analogs in other departments that can be taken as electives, unlike some other business courses (e.g. UGBA 105 and Sociology 116, or UGBA 103 and Economics 136).