-82.93% is the change from 990 to 169
Calculation steps:
[( 169 - 990 ) ÷ 990] x 100 = -82.93%
Formula
Percentage change = [(169 - 990) / 990] x 100
Subtract the new number by the original number
169 - 990 = -821
-821 ÷ 990 = -0.8292929292929293
-0.8292929292929293 x 100 = -82.93%