-52.86% is the change from 420 to 198
Calculation steps:
[( 198 - 420 ) ÷ 420] x 100 = -52.86%
Formula
Percentage change = [(198 - 420) / 420] x 100
Subtract the new number by the original number
198 - 420 = -222
-222 ÷ 420 = -0.5285714285714286
-0.5285714285714286 x 100 = -52.86%