-19.35% is the change from 832 to 671
Calculation steps:
[( 671 - 832 ) ÷ 832] x 100 = -19.35%
Formula
Percentage change = [(671 - 832) / 832] x 100
Subtract the new number by the original number
671 - 832 = -161
-161 ÷ 832 = -0.1935096153846154
-0.1935096153846154 x 100 = -19.35%