-94.83% is the change from 812 to 42
Calculation steps:
[( 42 - 812 ) ÷ 812] x 100 = -94.83%
Formula
Percentage change = [(42 - 812) / 812] x 100
Subtract the new number by the original number
42 - 812 = -770
-770 ÷ 812 = -0.9482758620689655
-0.9482758620689655 x 100 = -94.83%