factory invested 320,000 yuan to build a new production workshop. The investment was 80,000 yuan less than the plan, and what percentage was the investment less than the plan?
某工厂投资32万元新建了一生产车间比计划少投资8万元，比计划少投资百分之几？
<gadget id="calculator">32 + 8</gadget>
<output>40</output>

<gadget id="calculator">8 / 40</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>