A commodity is priced at 450 yuan, which is 50 yuan lower than the original price. How much is the reduction?
一种商品，售价450元，比原来降低了50元，降低了百分之几？
<gadget id="calculator">450 + 50</gadget>
<output>500</output>

<gadget id="calculator">50 / 500</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>