-42.82% is the change from 878 to 502
Calculation steps:
[( 502 - 878 ) ÷ 878] x 100 = -42.82%
Formula
Percentage change = [(502 - 878) / 878] x 100
Subtract the new number by the original number
502 - 878 = -376
-376 ÷ 878 = -0.428246013667426
-0.428246013667426 x 100 = -42.82%