-16.51% is the change from 939 to 784
Calculation steps:
[( 784 - 939 ) ÷ 939] x 100 = -16.51%
Formula
Percentage change = [(784 - 939) / 939] x 100
Subtract the new number by the original number
784 - 939 = -155
-155 ÷ 939 = -0.1650692225772098
-0.1650692225772098 x 100 = -16.51%