In 1950, the population of a city was about 800,000 people. over the next 50 year, the population increased to 1.3 million.find the percent of increase

62.5% increase

Step-by-step explanation:

First step : find the difference between two numbers, in this case, it's 1300000 - 800000 = 500000.

Second Step: Take the difference, 500000, and divide by the original number: 500000/800000  = 0.625.

Last, multiply the number above by 100: 0.625*100 = 62.5%. You're done! You calculated difference of a number in percent, and the answer is a percentage increase of 62.5%.