-99% is the change from 299 to 3
Calculation steps:
[( 3 - 299 ) ÷ 299] x 100 = -99%
Formula
Percentage change = [(3 - 299) / 299] x 100
Subtract the new number by the original number
3 - 299 = -296
-296 ÷ 299 = -0.9899665551839465
-0.9899665551839465 x 100 = -99%