-22.15% is the change from 641 to 499
Calculation steps:
[( 499 - 641 ) ÷ 641] x 100 = -22.15%
Formula
Percentage change = [(499 - 641) / 641] x 100
Subtract the new number by the original number
499 - 641 = -142
-142 ÷ 641 = -0.22152886115444617
-0.22152886115444617 x 100 = -22.15%