-39.27% is the change from 871 to 529
Calculation steps:
[( 529 - 871 ) ÷ 871] x 100 = -39.27%
Formula
Percentage change = [(529 - 871) / 871] x 100
Subtract the new number by the original number
529 - 871 = -342
-342 ÷ 871 = -0.39265212399540755
-0.39265212399540755 x 100 = -39.27%