-79.39% is the change from 990 to 204
Calculation steps:
[( 204 - 990 ) ÷ 990] x 100 = -79.39%
Formula
Percentage change = [(204 - 990) / 990] x 100
Subtract the new number by the original number
204 - 990 = -786
-786 ÷ 990 = -0.793939393939394
-0.793939393939394 x 100 = -79.39%