-71.88% is the change from 256 to 72
Calculation steps:
[( 72 - 256 ) ÷ 256] x 100 = -71.88%
Formula
Percentage change = [(72 - 256) / 256] x 100
Subtract the new number by the original number
72 - 256 = -184
-184 ÷ 256 = -0.71875
-0.71875 x 100 = -71.88%