-72.94% is the change from 946 to 256
Calculation steps:
[( 256 - 946 ) ÷ 946] x 100 = -72.94%
Formula
Percentage change = [(256 - 946) / 946] x 100
Subtract the new number by the original number
256 - 946 = -690
-690 ÷ 946 = -0.7293868921775899
-0.7293868921775899 x 100 = -72.94%