Complex sentence: Residents in this community had a median household income of $43,716 in 2000, while the median household income for the whole city of Calgary was approximately 30% greater: $57,879.
Split into simpler sentences: Residents in this community had a median household income of $43,716 in 2000. As a reference, the median household income for the whole city of Calgary was approximately 30% greater: $57,879.