-90.32% is the change from 847 to 82
Calculation steps:
[( 82 - 847 ) ÷ 847] x 100 = -90.32%
Formula
Percentage change = [(82 - 847) / 847] x 100
Subtract the new number by the original number
82 - 847 = -765
-765 ÷ 847 = -0.9031877213695395
-0.9031877213695395 x 100 = -90.32%