-32.59% is the change from 939 to 633
Calculation steps:
[( 633 - 939 ) ÷ 939] x 100 = -32.59%
Formula
Percentage change = [(633 - 939) / 939] x 100
Subtract the new number by the original number
633 - 939 = -306
-306 ÷ 939 = -0.3258785942492013
-0.3258785942492013 x 100 = -32.59%