-80.22% is the change from 819 to 162
Calculation steps:
[( 162 - 819 ) ÷ 819] x 100 = -80.22%
Formula
Percentage change = [(162 - 819) / 819] x 100
Subtract the new number by the original number
162 - 819 = -657
-657 ÷ 819 = -0.8021978021978022
-0.8021978021978022 x 100 = -80.22%