For a sample of 8 companies, the number of employees and gross annual sales (in thousands) were recorded: Employees 2 5 10 17 21 24 32 10 Sales 51.2...

For a sample of 8 companies, the number of employees and gross annual sales (in thousands) were recorded:

Employees 2 5 10 17 21 24 32 10

Sales 51.2 132.1 260.3 385.4 480.6 634.0 794.3 992.3

What percentage of the variation in gross annual sales is explained by the number of employees?