-15.97% is the change from 939 to 789
Calculation steps:
[( 789 - 939 ) ÷ 939] x 100 = -15.97%
Formula
Percentage change = [(789 - 939) / 939] x 100
Subtract the new number by the original number
789 - 939 = -150
-150 ÷ 939 = -0.1597444089456869
-0.1597444089456869 x 100 = -15.97%