The current price of a book of 6 yuan is 2 yuan lower than the original price. By what percentage is the price reduced?
一本书现价6元比原价降价2元，售价降低了百分之几？
<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>