-50.62% is the change from 812 to 401
Calculation steps:
[( 401 - 812 ) ÷ 812] x 100 = -50.62%
Formula
Percentage change = [(401 - 812) / 812] x 100
Subtract the new number by the original number
401 - 812 = -411
-411 ÷ 812 = -0.5061576354679803
-0.5061576354679803 x 100 = -50.62%