-51.64% is the change from 428 to 207
Calculation steps:
[( 207 - 428 ) ÷ 428] x 100 = -51.64%
Formula
Percentage change = [(207 - 428) / 428] x 100
Subtract the new number by the original number
207 - 428 = -221
-221 ÷ 428 = -0.5163551401869159
-0.5163551401869159 x 100 = -51.64%