-80.66% is the change from 667 to 129
Calculation steps:
[( 129 - 667 ) ÷ 667] x 100 = -80.66%
Formula
Percentage change = [(129 - 667) / 667] x 100
Subtract the new number by the original number
129 - 667 = -538
-538 ÷ 667 = -0.8065967016491754
-0.8065967016491754 x 100 = -80.66%