-23.19% is the change from 871 to 669
Calculation steps:
[( 669 - 871 ) ÷ 871] x 100 = -23.19%
Formula
Percentage change = [(669 - 871) / 871] x 100
Subtract the new number by the original number
669 - 871 = -202
-202 ÷ 871 = -0.23191733639494833
-0.23191733639494833 x 100 = -23.19%