-0.22% is the change from 920 to 918
Calculation steps:
[( 918 - 920 ) ÷ 920] x 100 = -0.22%
Formula
Percentage change = [(918 - 920) / 920] x 100
Subtract the new number by the original number
918 - 920 = -2
-2 ÷ 920 = -0.002173913043478261
-0.002173913043478261 x 100 = -0.22%