-51.55% is the change from 677 to 328
Calculation steps:
[( 328 - 677 ) ÷ 677] x 100 = -51.55%
Formula
Percentage change = [(328 - 677) / 677] x 100
Subtract the new number by the original number
328 - 677 = -349
-349 ÷ 677 = -0.5155096011816839
-0.5155096011816839 x 100 = -51.55%