-83.16% is the change from 861 to 145
Calculation steps:
[( 145 - 861 ) ÷ 861] x 100 = -83.16%
Formula
Percentage change = [(145 - 861) / 861] x 100
Subtract the new number by the original number
145 - 861 = -716
-716 ÷ 861 = -0.8315911730545877
-0.8315911730545877 x 100 = -83.16%