-28.47% is the change from 871 to 623
Calculation steps:
[( 623 - 871 ) ÷ 871] x 100 = -28.47%
Formula
Percentage change = [(623 - 871) / 871] x 100
Subtract the new number by the original number
623 - 871 = -248
-248 ÷ 871 = -0.2847301951779564
-0.2847301951779564 x 100 = -28.47%