-63.67% is the change from 256 to 93
Calculation steps:
[( 93 - 256 ) ÷ 256] x 100 = -63.67%
Formula
Percentage change = [(93 - 256) / 256] x 100
Subtract the new number by the original number
93 - 256 = -163
-163 ÷ 256 = -0.63671875
-0.63671875 x 100 = -63.67%