-51.11% is the change from 812 to 397
Calculation steps:
[( 397 - 812 ) ÷ 812] x 100 = -51.11%
Formula
Percentage change = [(397 - 812) / 812] x 100
Subtract the new number by the original number
397 - 812 = -415
-415 ÷ 812 = -0.5110837438423645
-0.5110837438423645 x 100 = -51.11%