-83.13% is the change from 990 to 167
Calculation steps:
[( 167 - 990 ) ÷ 990] x 100 = -83.13%
Formula
Percentage change = [(167 - 990) / 990] x 100
Subtract the new number by the original number
167 - 990 = -823
-823 ÷ 990 = -0.8313131313131313
-0.8313131313131313 x 100 = -83.13%