-94.02% is the change from 669 to 40
Calculation steps:
[( 40 - 669 ) ÷ 669] x 100 = -94.02%
Formula
Percentage change = [(40 - 669) / 669] x 100
Subtract the new number by the original number
40 - 669 = -629
-629 ÷ 669 = -0.9402092675635276
-0.9402092675635276 x 100 = -94.02%