On the first day of June there were about 16.85 hours of daylight in a city. Five months later there were about 5.50 hours of daylight. What was the percent decrease?
You would take 16.85 - 5.50 to find the decreased amount. Then to find the percentage you would take that answer (11.35) and divide it by the original (16.85) and get 0.6735905, then you simplify and get 67.36%.
