-35.77% is the change from 998 to 641
Calculation steps:
[( 641 - 998 ) ÷ 998] x 100 = -35.77%
Formula
Percentage change = [(641 - 998) / 998] x 100
Subtract the new number by the original number
641 - 998 = -357
-357 ÷ 998 = -0.35771543086172347
-0.35771543086172347 x 100 = -35.77%