-96.31% is the change from 812 to 30
Calculation steps:
[( 30 - 812 ) ÷ 812] x 100 = -96.31%
Formula
Percentage change = [(30 - 812) / 812] x 100
Subtract the new number by the original number
30 - 812 = -782
-782 ÷ 812 = -0.9630541871921182
-0.9630541871921182 x 100 = -96.31%