-62.86% is the change from 420 to 156
Calculation steps:
[( 156 - 420 ) ÷ 420] x 100 = -62.86%
Formula
Percentage change = [(156 - 420) / 420] x 100
Subtract the new number by the original number
156 - 420 = -264
-264 ÷ 420 = -0.6285714285714286
-0.6285714285714286 x 100 = -62.86%