-41.12% is the change from 878 to 517
Calculation steps:
[( 517 - 878 ) ÷ 878] x 100 = -41.12%
Formula
Percentage change = [(517 - 878) / 878] x 100
Subtract the new number by the original number
517 - 878 = -361
-361 ÷ 878 = -0.41116173120728927
-0.41116173120728927 x 100 = -41.12%