-77.34% is the change from 256 to 58
Calculation steps:
[( 58 - 256 ) ÷ 256] x 100 = -77.34%
Formula
Percentage change = [(58 - 256) / 256] x 100
Subtract the new number by the original number
58 - 256 = -198
-198 ÷ 256 = -0.7734375
-0.7734375 x 100 = -77.34%