-62.11% is the change from 256 to 97
Calculation steps:
[( 97 - 256 ) ÷ 256] x 100 = -62.11%
Formula
Percentage change = [(97 - 256) / 256] x 100
Subtract the new number by the original number
97 - 256 = -159
-159 ÷ 256 = -0.62109375
-0.62109375 x 100 = -62.11%