-77.84% is the change from 871 to 193
Calculation steps:
[( 193 - 871 ) ÷ 871] x 100 = -77.84%
Formula
Percentage change = [(193 - 871) / 871] x 100
Subtract the new number by the original number
193 - 871 = -678
-678 ÷ 871 = -0.7784156142365097
-0.7784156142365097 x 100 = -77.84%