-68.1% is the change from 812 to 259
Calculation steps:
[( 259 - 812 ) ÷ 812] x 100 = -68.1%
Formula
Percentage change = [(259 - 812) / 812] x 100
Subtract the new number by the original number
259 - 812 = -553
-553 ÷ 812 = -0.6810344827586207
-0.6810344827586207 x 100 = -68.1%