-83.35% is the change from 871 to 145
Calculation steps:
[( 145 - 871 ) ÷ 871] x 100 = -83.35%
Formula
Percentage change = [(145 - 871) / 871] x 100
Subtract the new number by the original number
145 - 871 = -726
-726 ÷ 871 = -0.8335246842709529
-0.8335246842709529 x 100 = -83.35%