-35.66% is the change from 631 to 406
Calculation steps:
[( 406 - 631 ) ÷ 631] x 100 = -35.66%
Formula
Percentage change = [(406 - 631) / 631] x 100
Subtract the new number by the original number
406 - 631 = -225
-225 ÷ 631 = -0.35657686212361334
-0.35657686212361334 x 100 = -35.66%