-39.31% is the change from 669 to 406
Calculation steps:
[( 406 - 669 ) ÷ 669] x 100 = -39.31%
Formula
Percentage change = [(406 - 669) / 669] x 100
Subtract the new number by the original number
406 - 669 = -263
-263 ÷ 669 = -0.3931240657698057
-0.3931240657698057 x 100 = -39.31%