-50.91% is the change from 878 to 431
Calculation steps:
[( 431 - 878 ) ÷ 878] x 100 = -50.91%
Formula
Percentage change = [(431 - 878) / 878] x 100
Subtract the new number by the original number
431 - 878 = -447
-447 ÷ 878 = -0.5091116173120729
-0.5091116173120729 x 100 = -50.91%