-50.3% is the change from 843 to 419
Calculation steps:
[( 419 - 843 ) ÷ 843] x 100 = -50.3%
Formula
Percentage change = [(419 - 843) / 843] x 100
Subtract the new number by the original number
419 - 843 = -424
-424 ÷ 843 = -0.5029655990510083
-0.5029655990510083 x 100 = -50.3%