Original sentence: A percentage of the population practice Vodou.According to the 2012 revison of the World Population Prospects the total population was 9,896,000 in 2010, compared to 3,221,000 in 1950.In the metropolitan area of Port-au-Prince, home to 2.21 million of Haiti's 8.5 million people,  23 percent of adults have completed secondary school with 16 percent passing the state graduation exam
Edited sentence: According to the 2012 revison of the World Population Prospects the total population was 9,896,000 in 2010, compared to only 3,221,000 in 1950.In the metropolitan area of Port-au-Prince, home to 2.21 million of Haiti's 8.5 million people, only 23 percent of adults have completed secondary school with 16 percent passing the state graduation exam.Only a very small percentage of the population practice Vodou