-90.38% is the change from 852 to 82
Calculation steps:
[( 82 - 852 ) ÷ 852] x 100 = -90.38%
Formula
Percentage change = [(82 - 852) / 852] x 100
Subtract the new number by the original number
82 - 852 = -770
-770 ÷ 852 = -0.903755868544601
-0.903755868544601 x 100 = -90.38%