-40.21% is the change from 878 to 525
Calculation steps:
[( 525 - 878 ) ÷ 878] x 100 = -40.21%
Formula
Percentage change = [(525 - 878) / 878] x 100
Subtract the new number by the original number
525 - 878 = -353
-353 ÷ 878 = -0.4020501138952164
-0.4020501138952164 x 100 = -40.21%