-81.37% is the change from 832 to 155
Calculation steps:
[( 155 - 832 ) ÷ 832] x 100 = -81.37%
Formula
Percentage change = [(155 - 832) / 832] x 100
Subtract the new number by the original number
155 - 832 = -677
-677 ÷ 832 = -0.8137019230769231
-0.8137019230769231 x 100 = -81.37%