The pie charts shows the people who work in different sector of jobs in percentage.
Overall, both town either remain the same or had a slight decrease except for service workers percentage.
In the year 1960, Town A with 30% population of sales worker was slightly higher than Town B around 20%. Although, Town B had the highest percentage of manufacturing workers at 70% which was twice as Town A with 41%, Town A had three times service worker population compared to Town B.
About 50 years later, both town experience a dramatic rise of service worker with Town A 29% to 64% and Town B 10% to 25%. Furthermore, both had a slight reduced manufactures population and sales worker population stayed nearly the same.