-34.97% is the change from 878 to 571
Calculation steps:
[( 571 - 878 ) ÷ 878] x 100 = -34.97%
Formula
Percentage change = [(571 - 878) / 878] x 100
Subtract the new number by the original number
571 - 878 = -307
-307 ÷ 878 = -0.34965831435079725
-0.34965831435079725 x 100 = -34.97%