-73.83% is the change from 256 to 67
Calculation steps:
[( 67 - 256 ) ÷ 256] x 100 = -73.83%
Formula
Percentage change = [(67 - 256) / 256] x 100
Subtract the new number by the original number
67 - 256 = -189
-189 ÷ 256 = -0.73828125
-0.73828125 x 100 = -73.83%