A tape recorder is priced at 450 yuan, which is 150 yuan lower than the original price. How many percent lower than the original price?
一种收录机售价450元，比原价降低了150元．比原价降低了百分之几？
<gadget id="calculator">450 + 150</gadget>
<output>600</output>

<gadget id="calculator">150 / 600</gadget>
<output>1/4 = around 0.25</output>

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