-39.02% is the change from 861 to 525
Calculation steps:
[( 525 - 861 ) ÷ 861] x 100 = -39.02%
Formula
Percentage change = [(525 - 861) / 861] x 100
Subtract the new number by the original number
525 - 861 = -336
-336 ÷ 861 = -0.3902439024390244
-0.3902439024390244 x 100 = -39.02%