-73.71% is the change from 871 to 229
Calculation steps:
[( 229 - 871 ) ÷ 871] x 100 = -73.71%
Formula
Percentage change = [(229 - 871) / 871] x 100
Subtract the new number by the original number
229 - 871 = -642
-642 ÷ 871 = -0.7370838117106774
-0.7370838117106774 x 100 = -73.71%