-86.19% is the change from 666 to 92
Calculation steps:
[( 92 - 666 ) ÷ 666] x 100 = -86.19%
Formula
Percentage change = [(92 - 666) / 666] x 100
Subtract the new number by the original number
92 - 666 = -574
-574 ÷ 666 = -0.8618618618618619
-0.8618618618618619 x 100 = -86.19%