-41.34% is the change from 878 to 515
Calculation steps:
[( 515 - 878 ) ÷ 878] x 100 = -41.34%
Formula
Percentage change = [(515 - 878) / 878] x 100
Subtract the new number by the original number
515 - 878 = -363
-363 ÷ 878 = -0.4134396355353075
-0.4134396355353075 x 100 = -41.34%