-20.87% is the change from 848 to 671
Calculation steps:
[( 671 - 848 ) ÷ 848] x 100 = -20.87%
Formula
Percentage change = [(671 - 848) / 848] x 100
Subtract the new number by the original number
671 - 848 = -177
-177 ÷ 848 = -0.20872641509433962
-0.20872641509433962 x 100 = -20.87%