-72.1% is the change from 871 to 243
Calculation steps:
[( 243 - 871 ) ÷ 871] x 100 = -72.1%
Formula
Percentage change = [(243 - 871) / 871] x 100
Subtract the new number by the original number
243 - 871 = -628
-628 ÷ 871 = -0.7210103329506314
-0.7210103329506314 x 100 = -72.1%