-64.29% is the change from 812 to 290
Calculation steps:
[( 290 - 812 ) ÷ 812] x 100 = -64.29%
Formula
Percentage change = [(290 - 812) / 812] x 100
Subtract the new number by the original number
290 - 812 = -522
-522 ÷ 812 = -0.6428571428571429
-0.6428571428571429 x 100 = -64.29%