-72.9% is the change from 871 to 236
Calculation steps:
[( 236 - 871 ) ÷ 871] x 100 = -72.9%
Formula
Percentage change = [(236 - 871) / 871] x 100
Subtract the new number by the original number
236 - 871 = -635
-635 ÷ 871 = -0.7290470723306545
-0.7290470723306545 x 100 = -72.9%