-30.1% is the change from 907 to 634
Calculation steps:
[( 634 - 907 ) ÷ 907] x 100 = -30.1%
Formula
Percentage change = [(634 - 907) / 907] x 100
Subtract the new number by the original number
634 - 907 = -273
-273 ÷ 907 = -0.30099228224917307
-0.30099228224917307 x 100 = -30.1%