Due to the strengthening of enterprise management in the chemical fiber factory, the number of workers per shift was reduced from 800 to 650. By what percentage is the number of workers per shift reduced now?
化纤厂由于加强企业管理，每班的工人由800名减少到650名．现在每班工人数比原来减少了百分之几？
<gadget id="calculator">800 - 650</gadget>
<output>150</output>

<gadget id="calculator">150 / 800</gadget>
<output>3/16 = around 0.1875</output>

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