-89.14% is the change from 939 to 102
Calculation steps:
[( 102 - 939 ) ÷ 939] x 100 = -89.14%
Formula
Percentage change = [(102 - 939) / 939] x 100
Subtract the new number by the original number
102 - 939 = -837
-837 ÷ 939 = -0.8913738019169329
-0.8913738019169329 x 100 = -89.14%