Complex sentence: Stephen Harper has only made two Senate appointments to date, both men (Michael Fortier, and Bert Brown); the previous prime minister, Paul Martin, made 17 Senate appointments, of whom six (35.3%) were women.
Split into simpler sentences: Stephen Harper has only made two Senate appointments to date, both men (Michael Fortier and Bert Brown). The previous prime minister, Paul Martin, made 17 Senate appointments, of whom six (35.3%) were women.