-47.83% is the change from 669 to 349
Calculation steps:
[( 349 - 669 ) ÷ 669] x 100 = -47.83%
Formula
Percentage change = [(349 - 669) / 669] x 100
Subtract the new number by the original number
349 - 669 = -320
-320 ÷ 669 = -0.47832585949177875
-0.47832585949177875 x 100 = -47.83%