-49.59% is the change from 847 to 427
Calculation steps:
[( 427 - 847 ) ÷ 847] x 100 = -49.59%
Formula
Percentage change = [(427 - 847) / 847] x 100
Subtract the new number by the original number
427 - 847 = -420
-420 ÷ 847 = -0.49586776859504134
-0.49586776859504134 x 100 = -49.59%