-9.57% is the change from 669 to 605
Calculation steps:
[( 605 - 669 ) ÷ 669] x 100 = -9.57%
Formula
Percentage change = [(605 - 669) / 669] x 100
Subtract the new number by the original number
605 - 669 = -64
-64 ÷ 669 = -0.09566517189835576
-0.09566517189835576 x 100 = -9.57%