-65.53% is the change from 235 to 81
Calculation steps:
[( 81 - 235 ) ÷ 235] x 100 = -65.53%
Formula
Percentage change = [(81 - 235) / 235] x 100
Subtract the new number by the original number
81 - 235 = -154
-154 ÷ 235 = -0.6553191489361702
-0.6553191489361702 x 100 = -65.53%