-30.97% is the change from 226 to 156
Calculation steps:
[( 156 - 226 ) ÷ 226] x 100 = -30.97%
Formula
Percentage change = [(156 - 226) / 226] x 100
Subtract the new number by the original number
156 - 226 = -70
-70 ÷ 226 = -0.30973451327433627
-0.30973451327433627 x 100 = -30.97%