-80.48% is the change from 830 to 162
Calculation steps:
[( 162 - 830 ) ÷ 830] x 100 = -80.48%
Formula
Percentage change = [(162 - 830) / 830] x 100
Subtract the new number by the original number
162 - 830 = -668
-668 ÷ 830 = -0.8048192771084337
-0.8048192771084337 x 100 = -80.48%