Assume that an electric power plant could be built in the Upper Peninsula using wood as the fuel and would produce 621 megawatts of electricity. Assume that it would have an efficiency of converting wood energy into electricity of 0.29. Let's assume that wood has an energy content of 5.74 million BTU per ton. Assume that 3.1 tons of wood can be sustainably harvested from each acre of land per year. There are 640 acres per square mile, and the UP has 16,452 square miles. What percentage of the UP would be needed to supply this power plant? Express your answer in percent to one decimal place without the percent sign.