George Kyparisis makes bowling balls in his Miami plant. With recent increases in his costs, he has a newfound interest in efficiency. George is interested in determining the productivity of his organization. He would like to know if his organization is maintaining the manufacturing average of 3% increase in productivity per year?

He has the following data representing a month from last year and an equivalent month this year (listed below) Show the productivity percentage change for each category using the following cost data and table information Labor: $15 per hour
Resin: $5 per pound
Capital expense: 1% per month of investment
Energy: $0.50 per BTU

Last Year Now Units
Produced 1000 1000
Labor 300 275
Resin 50 45
Capital Invested 10000 11000
Energy 3000 2850

a. What is the percent change in Labor productivity?