-98.52% is the change from 812 to 12
Calculation steps:
[( 12 - 812 ) ÷ 812] x 100 = -98.52%
Formula
Percentage change = [(12 - 812) / 812] x 100
Subtract the new number by the original number
12 - 812 = -800
-800 ÷ 812 = -0.9852216748768473
-0.9852216748768473 x 100 = -98.52%