There are 45 apple trees and 36 pear trees in the orchard, how many percent are there fewer pear trees than apple trees?
果园里有45棵苹果树和36棵梨树，梨树的棵数比苹果树少百分之几？
<gadget id="calculator">45 - 36</gadget>
<output>9</output>

<gadget id="calculator">9 / 45</gadget>
<output>1/5 = around 0.2</output>

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