-39.01% is the change from 669 to 408
Calculation steps:
[( 408 - 669 ) ÷ 669] x 100 = -39.01%
Formula
Percentage change = [(408 - 669) / 669] x 100
Subtract the new number by the original number
408 - 669 = -261
-261 ÷ 669 = -0.3901345291479821
-0.3901345291479821 x 100 = -39.01%