-48.79% is the change from 660 to 338
Calculation steps:
[( 338 - 660 ) ÷ 660] x 100 = -48.79%
Formula
Percentage change = [(338 - 660) / 660] x 100
Subtract the new number by the original number
338 - 660 = -322
-322 ÷ 660 = -0.48787878787878786
-0.48787878787878786 x 100 = -48.79%