-71.91% is the change from 235 to 66
Calculation steps:
[( 66 - 235 ) ÷ 235] x 100 = -71.91%
Formula
Percentage change = [(66 - 235) / 235] x 100
Subtract the new number by the original number
66 - 235 = -169
-169 ÷ 235 = -0.7191489361702128
-0.7191489361702128 x 100 = -71.91%