-69.86% is the change from 428 to 129
Calculation steps:
[( 129 - 428 ) ÷ 428] x 100 = -69.86%
Formula
Percentage change = [(129 - 428) / 428] x 100
Subtract the new number by the original number
129 - 428 = -299
-299 ÷ 428 = -0.6985981308411215
-0.6985981308411215 x 100 = -69.86%