-75.09% is the change from 871 to 217
Calculation steps:
[( 217 - 871 ) ÷ 871] x 100 = -75.09%
Formula
Percentage change = [(217 - 871) / 871] x 100
Subtract the new number by the original number
217 - 871 = -654
-654 ÷ 871 = -0.7508610792192881
-0.7508610792192881 x 100 = -75.09%