A factory planned to invest 300,000 yuan, but the actual investment was 240,000 yuan. What percentage was saved?
某厂计划投资30万元，实际投资24万元，节省了百分之几？
<gadget id="calculator">30 - 24</gadget>
<output>6</output>

<gadget id="calculator">6 / 30</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>