Hires and promotions is the correct answer. You should not include demotions. Organizations typically do not show reassignments and lateral transfers as placements. If a reassignment or lateral move constituted some kind of positive change for an employee in terms of pay, future opportunities, and/or increased responsibilities, you might be able to consider that as a placement. However, you would potentially need to explain to OFCCP why you were counting that kind of change as a placement. The safest and best answer is to count only hires and promotions as placements.