-83.38% is the change from 668 to 111
Calculation steps:
[( 111 - 668 ) ÷ 668] x 100 = -83.38%
Formula
Percentage change = [(111 - 668) / 668] x 100
Subtract the new number by the original number
111 - 668 = -557
-557 ÷ 668 = -0.8338323353293413
-0.8338323353293413 x 100 = -83.38%