The given chart illustrate that the percentage of people working in different types of sectors in town A and town B in two years i.e. 1960 and 2010.
Overall, it shows the percentage of sales and services gradually decreased from 1960 to 2010 whereas looking to the manufacturing it goes up drastically on the context of town A. However, in town B there is same decrease in all of the sectors.
In town A, we can see sales as high and manufacturing as low i.e. 41% and 29% in 1960 but, in 2020 we can see that the manufacturing increases and sales goes down which is 64% and 30% where services goes to 16% respectively.
Moving to the town B, the sales is very high. On the compare of town A we can see that, in 1960, the percentage of sales is very high as it is 76% and there is less percentage in services and manufacturing but, in 2020 little growth can be seen in both sector whereas, sales has dropped down by same percentage.