A certain school planted 50 saplings last year, and planted 80 saplings this year. How many percent more saplings are planted this year than last year? What is the correct column
某校去年植树苗50棵，今年植树苗80棵，今年比去年多植树苗百分之几？正确列式是多少
<gadget id="calculator">80 - 50</gadget>
<output>30</output>

<gadget id="calculator">30 / 50</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>