A project plans to invest 500,000 yuan, but actually saves 20,000 yuan compared to the plan. What percentage is the savings?
某工程计划投资50万元，实际比计划节约2万元，节约百分之几？
<gadget id="calculator">2 / 50</gadget>
<output>1/25 = around 0.04</output>

<result>1/25 = around 0.04</result>