-77.87% is the change from 818 to 181
Calculation steps:
[( 181 - 818 ) ÷ 818] x 100 = -77.87%
Formula
Percentage change = [(181 - 818) / 818] x 100
Subtract the new number by the original number
181 - 818 = -637
-637 ÷ 818 = -0.7787286063569682
-0.7787286063569682 x 100 = -77.87%