-22.31% is the change from 641 to 498
Calculation steps:
[( 498 - 641 ) ÷ 641] x 100 = -22.31%
Formula
Percentage change = [(498 - 641) / 641] x 100
Subtract the new number by the original number
498 - 641 = -143
-143 ÷ 641 = -0.22308892355694226
-0.22308892355694226 x 100 = -22.31%