-54.1% is the change from 878 to 403
Calculation steps:
[( 403 - 878 ) ÷ 878] x 100 = -54.1%
Formula
Percentage change = [(403 - 878) / 878] x 100
Subtract the new number by the original number
403 - 878 = -475
-475 ÷ 878 = -0.541002277904328
-0.541002277904328 x 100 = -54.1%