-31.83% is the change from 641 to 437
Calculation steps:
[( 437 - 641 ) ÷ 641] x 100 = -31.83%
Formula
Percentage change = [(437 - 641) / 641] x 100
Subtract the new number by the original number
437 - 641 = -204
-204 ÷ 641 = -0.31825273010920435
-0.31825273010920435 x 100 = -31.83%