Second Chance Welding rebuilds spot welders for manufacturers. The following budgeted cost data for 2017 is available for Second Chance. Time Charges Material Loading Charges Technicians' wages and benefits $251,600 - Parts manager's salary and benefits - $40,700 Office employee's salary and benefits 59,200 11,648 Other overhead 7,400 20,650 Total budgeted costs $318,200 $72,998 The company desires a $40.00 profit margin per hour of labor and a 28.00% profit margin on parts. It has budgeted for 7,400 hours of repair time in the coming year, and estimates that the total invoice cost of parts and materials in 2017 will be $413,000. what is the material loading percentage?