-73.69% is the change from 973 to 256
Calculation steps:
[( 256 - 973 ) ÷ 973] x 100 = -73.69%
Formula
Percentage change = [(256 - 973) / 973] x 100
Subtract the new number by the original number
256 - 973 = -717
-717 ÷ 973 = -0.736896197327852
-0.736896197327852 x 100 = -73.69%