The current price of a commodity is 60 yuan, and the current price is 20 yuan lower than the original price. What percentage is the reduction?
一种商品现价60元，现价比原价降低了20元，求降低了百分之几？
<gadget id="calculator">20 + 60</gadget>
<output>80</output>

<gadget id="calculator">20 / 80</gadget>
<output>1/4 = around 0.25</output>

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