-83.64% is the change from 990 to 162
Calculation steps:
[( 162 - 990 ) ÷ 990] x 100 = -83.64%
Formula
Percentage change = [(162 - 990) / 990] x 100
Subtract the new number by the original number
162 - 990 = -828
-828 ÷ 990 = -0.8363636363636363
-0.8363636363636363 x 100 = -83.64%