Xincheng Cement Plant produced 2,700 tons of cement in March this year, 450 tons more than planned. By what percentage?
新城水泥厂今年三月份生产水泥2700吨，比计划超产450吨，超产了百分之几？
<gadget id="calculator">2_700 - 450</gadget>
<output>2_250</output>

<gadget id="calculator">450 / 2_250</gadget>
<output>1/5 = around 0.2</output>

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