-69.73% is the change from 839 to 254
Calculation steps:
[( 254 - 839 ) ÷ 839] x 100 = -69.73%
Formula
Percentage change = [(254 - 839) / 839] x 100
Subtract the new number by the original number
254 - 839 = -585
-585 ÷ 839 = -0.6972586412395709
-0.6972586412395709 x 100 = -69.73%