-71.26% is the change from 668 to 192
Calculation steps:
[( 192 - 668 ) ÷ 668] x 100 = -71.26%
Formula
Percentage change = [(192 - 668) / 668] x 100
Subtract the new number by the original number
192 - 668 = -476
-476 ÷ 668 = -0.7125748502994012
-0.7125748502994012 x 100 = -71.26%