-29.36% is the change from 235 to 166
Calculation steps:
[( 166 - 235 ) ÷ 235] x 100 = -29.36%
Formula
Percentage change = [(166 - 235) / 235] x 100
Subtract the new number by the original number
166 - 235 = -69
-69 ÷ 235 = -0.2936170212765957
-0.2936170212765957 x 100 = -29.36%