-48.55% is the change from 657 to 338
Calculation steps:
[( 338 - 657 ) ÷ 657] x 100 = -48.55%
Formula
Percentage change = [(338 - 657) / 657] x 100
Subtract the new number by the original number
338 - 657 = -319
-319 ÷ 657 = -0.4855403348554033
-0.4855403348554033 x 100 = -48.55%