-30.43% is the change from 631 to 439
Calculation steps:
[( 439 - 631 ) ÷ 631] x 100 = -30.43%
Formula
Percentage change = [(439 - 631) / 631] x 100
Subtract the new number by the original number
439 - 631 = -192
-192 ÷ 631 = -0.30427892234548337
-0.30427892234548337 x 100 = -30.43%