A skateboard manufacturer had a contract last year for 3,380 skateboards which took 34 emplyees two weeks (40 hours per week) to manufacture. This year the contract was for 7,480 skateboards that were manufactured by 44 employees in three weeks (40 hours per week). Calculate the productivity for each year in skateboards manufactured per labor hour. Which year were the emplyees more productive? What is the percent change between last year and this year