-91.27% is the change from 939 to 82
Calculation steps:
[( 82 - 939 ) ÷ 939] x 100 = -91.27%
Formula
Percentage change = [(82 - 939) / 939] x 100
Subtract the new number by the original number
82 - 939 = -857
-857 ÷ 939 = -0.9126730564430245
-0.9126730564430245 x 100 = -91.27%