-71.79% is the change from 904 to 255
Calculation steps:
[( 255 - 904 ) ÷ 904] x 100 = -71.79%
Formula
Percentage change = [(255 - 904) / 904] x 100
Subtract the new number by the original number
255 - 904 = -649
-649 ÷ 904 = -0.7179203539823009
-0.7179203539823009 x 100 = -71.79%