-79.61% is the change from 819 to 167
Calculation steps:
[( 167 - 819 ) ÷ 819] x 100 = -79.61%
Formula
Percentage change = [(167 - 819) / 819] x 100
Subtract the new number by the original number
167 - 819 = -652
-652 ÷ 819 = -0.796092796092796
-0.796092796092796 x 100 = -79.61%