-30.54% is the change from 907 to 630
Calculation steps:
[( 630 - 907 ) ÷ 907] x 100 = -30.54%
Formula
Percentage change = [(630 - 907) / 907] x 100
Subtract the new number by the original number
630 - 907 = -277
-277 ÷ 907 = -0.3054024255788313
-0.3054024255788313 x 100 = -30.54%