-98.05% is the change from 871 to 17
Calculation steps:
[( 17 - 871 ) ÷ 871] x 100 = -98.05%
Formula
Percentage change = [(17 - 871) / 871] x 100
Subtract the new number by the original number
17 - 871 = -854
-854 ÷ 871 = -0.9804822043628014
-0.9804822043628014 x 100 = -98.05%