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 UnitUnits Produced 1,000 1,000 Labor (hours) 280 255 $12Resin (pounds) 48 43 $5Capital Invested ($)9,000 10,000 1%Energy (BTU) 2,900 2,750 $0.50The percent change in productivity for one month last year versus one month this year on a multifactor basis with dollars as the common denominator = ___%?