-83.28% is the change from 999 to 167
Calculation steps:
[( 167 - 999 ) ÷ 999] x 100 = -83.28%
Formula
Percentage change = [(167 - 999) / 999] x 100
Subtract the new number by the original number
167 - 999 = -832
-832 ÷ 999 = -0.8328328328328328
-0.8328328328328328 x 100 = -83.28%