-79.83% is the change from 848 to 171
Calculation steps:
[( 171 - 848 ) ÷ 848] x 100 = -79.83%
Formula
Percentage change = [(171 - 848) / 848] x 100
Subtract the new number by the original number
171 - 848 = -677
-677 ÷ 848 = -0.7983490566037735
-0.7983490566037735 x 100 = -79.83%