A computer is priced at 6,800 yuan. Now the price has been reduced to 5,100 yuan. How much is the reduction?
一种电脑售价6800元，现在价格降低到5100元，降低了百分之几？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>