-96.55% is the change from 812 to 28
Calculation steps:
[( 28 - 812 ) ÷ 812] x 100 = -96.55%
Formula
Percentage change = [(28 - 812) / 812] x 100
Subtract the new number by the original number
28 - 812 = -784
-784 ÷ 812 = -0.9655172413793104
-0.9655172413793104 x 100 = -96.55%