-33.05% is the change from 233 to 156
Calculation steps:
[( 156 - 233 ) ÷ 233] x 100 = -33.05%
Formula
Percentage change = [(156 - 233) / 233] x 100
Subtract the new number by the original number
156 - 233 = -77
-77 ÷ 233 = -0.33047210300429186
-0.33047210300429186 x 100 = -33.05%