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 a 3% increase in productivity. He has the following data representing a month from last year and an equivalent month this year: Last Year Now Cost Per Input Unit Units Produced 1,200 1,200 Labor (hours) 300 275 $10 per hour Resin (pounds) Capital Invested ($) Energy (BTU) 50 45 $5 per pound 9,000 10,000 1% per month 3,000 2,850 $0.50 per BTU The percent change in productivity for one month last year versus one month this year on a multifactor basis with dollars as the common denominator = decimal places). % (enter your response as a percentage rounded to two