-32.17% is the change from 631 to 428
Calculation steps:
[( 428 - 631 ) ÷ 631] x 100 = -32.17%
Formula
Percentage change = [(428 - 631) / 631] x 100
Subtract the new number by the original number
428 - 631 = -203
-203 ÷ 631 = -0.32171156893819336
-0.32171156893819336 x 100 = -32.17%