-48.31% is the change from 830 to 429
Calculation steps:
[( 429 - 830 ) ÷ 830] x 100 = -48.31%
Formula
Percentage change = [(429 - 830) / 830] x 100
Subtract the new number by the original number
429 - 830 = -401
-401 ÷ 830 = -0.4831325301204819
-0.4831325301204819 x 100 = -48.31%