-72.14% is the change from 919 to 256
Calculation steps:
[( 256 - 919 ) ÷ 919] x 100 = -72.14%
Formula
Percentage change = [(256 - 919) / 919] x 100
Subtract the new number by the original number
256 - 919 = -663
-663 ÷ 919 = -0.721436343852013
-0.721436343852013 x 100 = -72.14%