-30.04% is the change from 223 to 156
Calculation steps:
[( 156 - 223 ) ÷ 223] x 100 = -30.04%
Formula
Percentage change = [(156 - 223) / 223] x 100
Subtract the new number by the original number
156 - 223 = -67
-67 ÷ 223 = -0.3004484304932735
-0.3004484304932735 x 100 = -30.04%