-48.73% is the change from 669 to 343
Calculation steps:
[( 343 - 669 ) ÷ 669] x 100 = -48.73%
Formula
Percentage change = [(343 - 669) / 669] x 100
Subtract the new number by the original number
343 - 669 = -326
-326 ÷ 669 = -0.4872944693572496
-0.4872944693572496 x 100 = -48.73%