The school pays 2,000 yuan for water in April, and saves 500 yuan in May compared to April. What percentage is the savings?
学校四月份付水费是2000元，五月份比四月份节约500元，节约了百分之几？
<gadget id="calculator">500 / 2_000</gadget>
<output>1/4 = around 0.25</output>

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