-81.03% is the change from 812 to 154
Calculation steps:
[( 154 - 812 ) ÷ 812] x 100 = -81.03%
Formula
Percentage change = [(154 - 812) / 812] x 100
Subtract the new number by the original number
154 - 812 = -658
-658 ÷ 812 = -0.8103448275862069
-0.8103448275862069 x 100 = -81.03%