-84.24% is the change from 939 to 148
Calculation steps:
[( 148 - 939 ) ÷ 939] x 100 = -84.24%
Formula
Percentage change = [(148 - 939) / 939] x 100
Subtract the new number by the original number
148 - 939 = -791
-791 ÷ 939 = -0.8423855165069223
-0.8423855165069223 x 100 = -84.24%