-66.81% is the change from 235 to 78
Calculation steps:
[( 78 - 235 ) ÷ 235] x 100 = -66.81%
Formula
Percentage change = [(78 - 235) / 235] x 100
Subtract the new number by the original number
78 - 235 = -157
-157 ÷ 235 = -0.6680851063829787
-0.6680851063829787 x 100 = -66.81%