In a management committee meeting, a decision was reached to reduce the workforce in your department by 10% in view of declining market demand for the company's products. The exercise shall be implemented over the next three months. You need to formally inform your department's staff of the decision. Firstly, compose a memorandum (memo) to convey to the staff about the decision reached. Secondly, provide justifications for the choice of using a memo by explaining its advantages.