-45.71% is the change from 420 to 228
Calculation steps:
[( 228 - 420 ) ÷ 420] x 100 = -45.71%
Formula
Percentage change = [(228 - 420) / 420] x 100
Subtract the new number by the original number
228 - 420 = -192
-192 ÷ 420 = -0.45714285714285713
-0.45714285714285713 x 100 = -45.71%