-29.66% is the change from 236 to 166
Calculation steps:
[( 166 - 236 ) ÷ 236] x 100 = -29.66%
Formula
Percentage change = [(166 - 236) / 236] x 100
Subtract the new number by the original number
166 - 236 = -70
-70 ÷ 236 = -0.2966101694915254
-0.2966101694915254 x 100 = -29.66%