Complex sentence: Cowplain is a village on the northern outskirts of Waterlooville and has a population itself of 8775 and takes up 7.3% of Havant borough's population.
Split into simpler sentences: Cowplain is a village on the northern outskirts of Waterlooville. With a population of 8775, it takes up 7.3% of Havant borough's population.