-49.01% is the change from 861 to 439
Calculation steps:
[( 439 - 861 ) ÷ 861] x 100 = -49.01%
Formula
Percentage change = [(439 - 861) / 861] x 100
Subtract the new number by the original number
439 - 861 = -422
-422 ÷ 861 = -0.4901277584204414
-0.4901277584204414 x 100 = -49.01%