-38.61% is the change from 878 to 539
Calculation steps:
[( 539 - 878 ) ÷ 878] x 100 = -38.61%
Formula
Percentage change = [(539 - 878) / 878] x 100
Subtract the new number by the original number
539 - 878 = -339
-339 ÷ 878 = -0.38610478359908884
-0.38610478359908884 x 100 = -38.61%