-21.08% is the change from 631 to 498
Calculation steps:
[( 498 - 631 ) ÷ 631] x 100 = -21.08%
Formula
Percentage change = [(498 - 631) / 631] x 100
Subtract the new number by the original number
498 - 631 = -133
-133 ÷ 631 = -0.21077654516640254
-0.21077654516640254 x 100 = -21.08%