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 unit
United Produced	1,200	1,200
Labor (hours)	280	255	$12 per hour
Resin (pounds)	48	43	$6 per hour
Capital Invested ($)	9,000	10,000	1% per month
Energy (BTU)	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 = ?

(enter your response as a percentage rounded to two decimal places).