-50.9% is the change from 222 to 109
Calculation steps:
[( 109 - 222 ) ÷ 222] x 100 = -50.9%
Formula
Percentage change = [(109 - 222) / 222] x 100
Subtract the new number by the original number
109 - 222 = -113
-113 ÷ 222 = -0.509009009009009
-0.509009009009009 x 100 = -50.9%