A certain town expanded a chemical plant. The original plan was to invest 120,000 yuan, but the actual cost was only 96,000 yuan. How much was the savings?
某镇扩建一个化工厂，原计划投资12万元，实际只用了9.6万元，节约了百分之几？
<gadget id="calculator">12 - 9.6</gadget>
<output>2.4</output>

<gadget id="calculator">2.4 / 12</gadget>
<output>0.2</output>

<result>0.2</result>