-85.05% is the change from 930 to 139
Calculation steps:
[( 139 - 930 ) ÷ 930] x 100 = -85.05%
Formula
Percentage change = [(139 - 930) / 930] x 100
Subtract the new number by the original number
139 - 930 = -791
-791 ÷ 930 = -0.8505376344086022
-0.8505376344086022 x 100 = -85.05%