-72.47% is the change from 930 to 256
Calculation steps:
[( 256 - 930 ) ÷ 930] x 100 = -72.47%
Formula
Percentage change = [(256 - 930) / 930] x 100
Subtract the new number by the original number
256 - 930 = -674
-674 ÷ 930 = -0.7247311827956989
-0.7247311827956989 x 100 = -72.47%