-30.51% is the change from 908 to 631
Calculation steps:
[( 631 - 908 ) ÷ 908] x 100 = -30.51%
Formula
Percentage change = [(631 - 908) / 908] x 100
Subtract the new number by the original number
631 - 908 = -277
-277 ÷ 908 = -0.30506607929515417
-0.30506607929515417 x 100 = -30.51%