-49.88% is the change from 812 to 407
Calculation steps:
[( 407 - 812 ) ÷ 812] x 100 = -49.88%
Formula
Percentage change = [(407 - 812) / 812] x 100
Subtract the new number by the original number
407 - 812 = -405
-405 ÷ 812 = -0.4987684729064039
-0.4987684729064039 x 100 = -49.88%