-91.62% is the change from 871 to 73
Calculation steps:
[( 73 - 871 ) ÷ 871] x 100 = -91.62%
Formula
Percentage change = [(73 - 871) / 871] x 100
Subtract the new number by the original number
73 - 871 = -798
-798 ÷ 871 = -0.9161882893226176
-0.9161882893226176 x 100 = -91.62%