In the construction of facilities in Guangming Industrial Park, the actual investment last year was 3.8 million yuan, which was 200,000 yuan less than the planned investment. How much was the savings?
光明工业园区进行设施建设，去年实际投资380万元，比计划投资节约了20万元，节约了百分之几？
<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>