The population in philadelphia in 1990 was 1,585,577. In 2010 the population was 1,526,006. What is the percent change in the population?

Find the difference between the two:

|1526006 - 1585577| = 59571

Divide the number between the initial number of people, and multiply by 100 to get the percentage:

59571 / 1585577 * 100 = 0.0375 * 100 = 3.75%

The percent change in the population was 3.75%