-90.34% is the change from 849 to 82
Calculation steps:
[( 82 - 849 ) ÷ 849] x 100 = -90.34%
Formula
Percentage change = [(82 - 849) / 849] x 100
Subtract the new number by the original number
82 - 849 = -767
-767 ÷ 849 = -0.9034157832744405
-0.9034157832744405 x 100 = -90.34%