-36.97% is the change from 871 to 549
Calculation steps:
[( 549 - 871 ) ÷ 871] x 100 = -36.97%
Formula
Percentage change = [(549 - 871) / 871] x 100
Subtract the new number by the original number
549 - 871 = -322
-322 ÷ 871 = -0.36969001148105624
-0.36969001148105624 x 100 = -36.97%