-94.15% is the change from 667 to 39
Calculation steps:
[( 39 - 667 ) ÷ 667] x 100 = -94.15%
Formula
Percentage change = [(39 - 667) / 667] x 100
Subtract the new number by the original number
39 - 667 = -628
-628 ÷ 667 = -0.9415292353823088
-0.9415292353823088 x 100 = -94.15%