A mobile phone manufacturer produced 570 mobile phones in the first week, which was 90 more than planned. What percentage of the plan was exceeded?
某手机制造厂第一周生产手机570部，比计划多生产90部，超额完成计划的百分之几？
<gadget id="calculator">570 - 90</gadget>
<output>480</output>

<gadget id="calculator">90 / 480</gadget>
<output>3/16 = around 0.1875</output>

<result>3/16 = around 0.1875</result>