-30.8% is the change from 224 to 155
Calculation steps:
[( 155 - 224 ) ÷ 224] x 100 = -30.8%
Formula
Percentage change = [(155 - 224) / 224] x 100
Subtract the new number by the original number
155 - 224 = -69
-69 ÷ 224 = -0.3080357142857143
-0.3080357142857143 x 100 = -30.8%