-51.87% is the change from 428 to 206
Calculation steps:
[( 206 - 428 ) ÷ 428] x 100 = -51.87%
Formula
Percentage change = [(206 - 428) / 428] x 100
Subtract the new number by the original number
206 - 428 = -222
-222 ÷ 428 = -0.5186915887850467
-0.5186915887850467 x 100 = -51.87%