The toy factory produces 4,000 toys this year, which is 1,000 fewer than last year. What percentage is the reduction in production this year compared to last year?
玩具厂今年生产玩具4000件，比去年减产1000件，今年比去年减产百分之几？
<gadget id="calculator">4_000 + 1_000</gadget>
<output>5_000</output>

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

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