-34.53% is the change from 669 to 438
Calculation steps:
[( 438 - 669 ) ÷ 669] x 100 = -34.53%
Formula
Percentage change = [(438 - 669) / 669] x 100
Subtract the new number by the original number
438 - 669 = -231
-231 ÷ 669 = -0.3452914798206278
-0.3452914798206278 x 100 = -34.53%