-80.42% is the change from 848 to 166
Calculation steps:
[( 166 - 848 ) ÷ 848] x 100 = -80.42%
Formula
Percentage change = [(166 - 848) / 848] x 100
Subtract the new number by the original number
166 - 848 = -682
-682 ÷ 848 = -0.8042452830188679
-0.8042452830188679 x 100 = -80.42%