-57.78% is the change from 990 to 418
Calculation steps:
[( 418 - 990 ) ÷ 990] x 100 = -57.78%
Formula
Percentage change = [(418 - 990) / 990] x 100
Subtract the new number by the original number
418 - 990 = -572
-572 ÷ 990 = -0.5777777777777777
-0.5777777777777777 x 100 = -57.78%