During the New Year's Day in 2014, the electrical shopping malls carried out price reduction promotions. A computer whose original price is 4,000 yuan is now sold at a reduced price of 3,200 yuan. How much is the price of this computer reduced?
2014年元旦期间，电器商场开展降价促销活动．一台原价4000元的电脑，现在降价为3200元出售．这台电脑降价了百分之几？
<gadget id="calculator">4_000 - 3_200</gadget>
<output>800</output>

<gadget id="calculator">800 / 4_000</gadget>
<output>1/5 = around 0.2</output>

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