-70.03% is the change from 871 to 261
Calculation steps:
[( 261 - 871 ) ÷ 871] x 100 = -70.03%
Formula
Percentage change = [(261 - 871) / 871] x 100
Subtract the new number by the original number
261 - 871 = -610
-610 ÷ 871 = -0.7003444316877153
-0.7003444316877153 x 100 = -70.03%