Howard Plastics produces plastic containers for use in the food packaging industry. Last year its average monthly production included 20,500 containers produced using one shift five days a week with an eight-hour-a-day operation. Of the items produced, 7 percent were deemed defective. Recently, Howard Plastics has implemented new production methods and a new quality improvement program. Its monthly production has increased to 25,500 containers with 9 percent defective. Compute productivity ratios for the old and new production system. New production system units/month Old production system units/month Compare the changes in productivity between the two production systems. (Round answer to 1 decimal place, e.g. 15.2%.) Change in productivity %