-49.47% is the change from 845 to 427
Calculation steps:
[( 427 - 845 ) ÷ 845] x 100 = -49.47%
Formula
Percentage change = [(427 - 845) / 845] x 100
Subtract the new number by the original number
427 - 845 = -418
-418 ÷ 845 = -0.49467455621301776
-0.49467455621301776 x 100 = -49.47%