For its three investment centers, Concord Company accumulates the following data: Sales Controllable margin Average operating assets $1,980,000 $4,056,000 $3,965,000 1,386,000 2,028,000 3,568,500 4,904,000 8,044,000 12,096,000 The centers expect the following changes in the next year: (1) increase sales 10%; (11) decrease costs $437,000; (III) decrease average operating assets $510,000. Compute the expected return on investment (ROI) for each center. Assume center I has a controllable margin percentage of 70%. (Round ROI to 1 decimal place, e.g. 1.5%.) The expected return on investment