The color printing factory expanded the factory building. The planned investment was 250,000 yuan, but the actual investment was 182,000 yuan. What percentage was saved?
彩印厂扩建厂房，计划投资25万元，实际投资18.2万元，节约了百分之几？
<gadget id="calculator">25 - 18.2</gadget>
<output>6.8</output>

<gadget id="calculator">6.8 / 25</gadget>
<output>0.272</output>

<result>0.272</result>