-57.64% is the change from 812 to 344
Calculation steps:
[( 344 - 812 ) ÷ 812] x 100 = -57.64%
Formula
Percentage change = [(344 - 812) / 812] x 100
Subtract the new number by the original number
344 - 812 = -468
-468 ÷ 812 = -0.5763546798029556
-0.5763546798029556 x 100 = -57.64%