Percentages for raw-material costs

This is just one question I need help with.

Accounting - Gigabyte, Inc.
Gigabyte, Inc. manufactures 3 products for the computer industry:
-(product G): annual sales, 8,000 units
-(product T): annual sales, 15,000 units
-(product W): annual sales, 4,000 units
The company uses a traditional, vloume-based product-costing system with manufacturing overhead applied on the basis of direct-labor dollars. The product costs have been computed as follows:

Product G Product T Product W
Raw Mat...............$35.00............................$52.50...............................$17.50
Direct Labor..........16.00(.8hr.@$20).............12.00(.6hr.@$20)...............8.00(.4hr.@$20)
Manuf. Overhead...140.00.............................105.00..............................70.00
Tot. Prod. Cost......$191.00...........................$169.50.............................$95.50

Manuf.Overhead Budget:
Machine setup..........$ 5,250
Machinery..................1,225,000
Inspection....................525,000
Material Handling..........875,000
Engineering..................344,750
Total..........................2,975,000

Direct Labor Budget(based on budgeted annual sales)
Product G: 8,000x$16.00= $128,000
Product T: 15,000x$12.00= 180,000
Product W: 4,000x$8.00= 32,000
Total...........................................$340,000

pred overhead rate=budgeted overhead/budgeted direct labor=875%

Gigabyte's pricing method has been to set a target price equal to 150% of full product cost. However, only product T have been seelling at the target price. The target and actual current prices for all three products are the following

Product G Product T Product W
Product cost.....................$191.00..............$169.50.............$95.50
Target Price.......................286.50................254.25.............143.25
Actual Current selling Price.213.00.................254.25.............200.00

Gigabyte has been forced to lower the prices of product G in order to get orders. In contrast, Gigabyte has raised the price of product W several times, but there has been no apparent loss of sales. Gigabyte, Inc. has been under increasing pressure to reduce the price even further on product G. In contrast, Gigabyte's competitor do not seem to be interested in the market for product W. Gigabyte apparently has this market to itself.

Gigagbytes controller, nan 0'second recently attended a conference at which activity-based costing systems were discussed. In stage one of the ABC project, each cost driver was identified for each activity cost pool. Finnally, the ABC project team compiled data showing the percentage of each cost driver that was consumed by each of Gigabyte's product lines.

These data are summarized as follows:
Activity Cost Pool Cost Driver Product G ProductT Product W
Machine setup number of setups 20% 30% 50%
Machinery machine hrs 25% 50% 25%
Inspection number of inspections 15% 45% 40%
Material Handling raw-material costs 25% 69% 6%
Engineering number of change orders 35% 10% 55%

Question:

Show how the controller determined the percentages given above for raw-material costs.