-30.35% is the change from 906 to 631
Calculation steps:
[( 631 - 906 ) ÷ 906] x 100 = -30.35%
Formula
Percentage change = [(631 - 906) / 906] x 100
Subtract the new number by the original number
631 - 906 = -275
-275 ÷ 906 = -0.30353200883002207
-0.30353200883002207 x 100 = -30.35%