-34.32% is the change from 236 to 155
Calculation steps:
[( 155 - 236 ) ÷ 236] x 100 = -34.32%
Formula
Percentage change = [(155 - 236) / 236] x 100
Subtract the new number by the original number
155 - 236 = -81
-81 ÷ 236 = -0.3432203389830508
-0.3432203389830508 x 100 = -34.32%