-79.71% is the change from 818 to 166
Calculation steps:
[( 166 - 818 ) ÷ 818] x 100 = -79.71%
Formula
Percentage change = [(166 - 818) / 818] x 100
Subtract the new number by the original number
166 - 818 = -652
-652 ÷ 818 = -0.7970660146699267
-0.7970660146699267 x 100 = -79.71%