-50.47% is the change from 848 to 420
Calculation steps:
[( 420 - 848 ) ÷ 848] x 100 = -50.47%
Formula
Percentage change = [(420 - 848) / 848] x 100
Subtract the new number by the original number
420 - 848 = -428
-428 ÷ 848 = -0.5047169811320755
-0.5047169811320755 x 100 = -50.47%