-31.58% is the change from 912 to 624
Calculation steps:
[( 624 - 912 ) ÷ 912] x 100 = -31.58%
Formula
Percentage change = [(624 - 912) / 912] x 100
Subtract the new number by the original number
624 - 912 = -288
-288 ÷ 912 = -0.3157894736842105
-0.3157894736842105 x 100 = -31.58%