-86.23% is the change from 668 to 92
Calculation steps:
[( 92 - 668 ) ÷ 668] x 100 = -86.23%
Formula
Percentage change = [(92 - 668) / 668] x 100
Subtract the new number by the original number
92 - 668 = -576
-576 ÷ 668 = -0.8622754491017964
-0.8622754491017964 x 100 = -86.23%