-30.49% is the change from 223 to 155
Calculation steps:
[( 155 - 223 ) ÷ 223] x 100 = -30.49%
Formula
Percentage change = [(155 - 223) / 223] x 100
Subtract the new number by the original number
155 - 223 = -68
-68 ÷ 223 = -0.30493273542600896
-0.30493273542600896 x 100 = -30.49%