The income statement comparison for Rush Delivery Company shows the income statement for the current and prior year. RUSH DELIVERY COMPANY Income Statement Comparison (Amounts in thousands) Current Year Prior Year Sales Cost of goods sold $15,000 $11,000 9,750 7,480 Gross profit Wages Utilities Repairs Selling $5,250 $3,520 $3,900 $3,080 300 250 75 325 225 200 Total expenses $4,500 $3,855 Operating income/(loss) ? ? Operating income/(loss) % ? ? Total assets (investment base) $4,500 $1,500 Return on investment ? ? Residual income (8% cost of capital) ? ? What is the operating income percentage for the current year