The pie charts provide information on the proportion of individuals working in different sectors – manufacturing, sales, and services – in town A and town B in two different years: 1960 and 2010.
Overall, the percentage of people working in three sectors in both towns changed a lot. In both towns services showed the lowest percentage in the first year, meanwhile manufacturing was the highest. However, the services gained the prime from manufacturing in town a in 2010, while in town b manufacturing was still the prime sector with a moderate change. Sales was in the middle in both towns and both years with little changes.
In 1960, the proportion of citizens who worked at services was the lowest (10%), whereas the manufacturing made up 70%, though in 2010 services grew dramatically to 64%, while manufacturing declined considerably to 20%. In contrast, the sales declined noticeably in 1960 and 2010, 30% and 16%, respectively.
As for town B, the amount of humans who worked at manufacturing was the main sector in both years (70% and 53%). The services showed 10%, whereas sales made up 20% in 1960, albeit services made up 25%, on the other hand sales showed 22% in 2010.