-9.42% is the change from 669 to 606
Calculation steps:
[( 606 - 669 ) ÷ 669] x 100 = -9.42%
Formula
Percentage change = [(606 - 669) / 669] x 100
Subtract the new number by the original number
606 - 669 = -63
-63 ÷ 669 = -0.09417040358744394
-0.09417040358744394 x 100 = -9.42%