-92.83% is the change from 990 to 71
Calculation steps:
[( 71 - 990 ) ÷ 990] x 100 = -92.83%
Formula
Percentage change = [(71 - 990) / 990] x 100
Subtract the new number by the original number
71 - 990 = -919
-919 ÷ 990 = -0.9282828282828283
-0.9282828282828283 x 100 = -92.83%