-80.48% is the change from 666 to 130
Calculation steps:
[( 130 - 666 ) ÷ 666] x 100 = -80.48%
Formula
Percentage change = [(130 - 666) / 666] x 100
Subtract the new number by the original number
130 - 666 = -536
-536 ÷ 666 = -0.8048048048048048
-0.8048048048048048 x 100 = -80.48%