-50.75% is the change from 871 to 429
Calculation steps:
[( 429 - 871 ) ÷ 871] x 100 = -50.75%
Formula
Percentage change = [(429 - 871) / 871] x 100
Subtract the new number by the original number
429 - 871 = -442
-442 ÷ 871 = -0.5074626865671642
-0.5074626865671642 x 100 = -50.75%