-79.09% is the change from 990 to 207
Calculation steps:
[( 207 - 990 ) ÷ 990] x 100 = -79.09%
Formula
Percentage change = [(207 - 990) / 990] x 100
Subtract the new number by the original number
207 - 990 = -783
-783 ÷ 990 = -0.7909090909090909
-0.7909090909090909 x 100 = -79.09%