Nongke owns a rice test field, which harvested 800 kilograms of rice last year, and it is expected to increase by 160 kilograms this year. What percentage is the increase this year compared to last year?
农科所有一块水稻试验田，去年收获水稻800千克，预计今年增收160千克，今年比去年增长了百分之几？
<gadget id="calculator">160 / 800</gadget>
<output>1/5 = around 0.2</output>

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