-33.55% is the change from 939 to 624
Calculation steps:
[( 624 - 939 ) ÷ 939] x 100 = -33.55%
Formula
Percentage change = [(624 - 939) / 939] x 100
Subtract the new number by the original number
624 - 939 = -315
-315 ÷ 939 = -0.3354632587859425
-0.3354632587859425 x 100 = -33.55%