The actual investment of a project is 3.8 million yuan, which is 200,000 yuan less than the planned investment. What percentage is the savings?
某项目实际投资380万元，比计划投资节省20万元，节省了百分之几？
<gadget id="calculator">380 + 20</gadget>
<output>400</output>

<gadget id="calculator">20 / 400</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>