-70.54% is the change from 869 to 256
Calculation steps:
[( 256 - 869 ) ÷ 869] x 100 = -70.54%
Formula
Percentage change = [(256 - 869) / 869] x 100
Subtract the new number by the original number
256 - 869 = -613
-613 ÷ 869 = -0.7054085155350979
-0.7054085155350979 x 100 = -70.54%