Complex sentence: For the population of 20 years and over in Boston those with a high school diploma or higher is 85.6% of the population and those with a bachelors degree or higher makes up 45.2% of the population.
Split into simpler sentences: For the population of 20 years and over in Boston those with a high school diploma or higher is 85.6%. Those with a bachelors degree or higher makes up 45.2% of the population.