-50.41% is the change from 845 to 419
Calculation steps:
[( 419 - 845 ) ÷ 845] x 100 = -50.41%
Formula
Percentage change = [(419 - 845) / 845] x 100
Subtract the new number by the original number
419 - 845 = -426
-426 ÷ 845 = -0.5041420118343195
-0.5041420118343195 x 100 = -50.41%