-20.75% is the change from 429 to 340
Calculation steps:
[( 340 - 429 ) ÷ 429] x 100 = -20.75%
Formula
Percentage change = [(340 - 429) / 429] x 100
Subtract the new number by the original number
340 - 429 = -89
-89 ÷ 429 = -0.20745920745920746
-0.20745920745920746 x 100 = -20.75%