-26.36% is the change from 861 to 634
Calculation steps:
[( 634 - 861 ) ÷ 861] x 100 = -26.36%
Formula
Percentage change = [(634 - 861) / 861] x 100
Subtract the new number by the original number
634 - 861 = -227
-227 ÷ 861 = -0.26364692218350755
-0.26364692218350755 x 100 = -26.36%