-51.4% is the change from 677 to 329
Calculation steps:
[( 329 - 677 ) ÷ 677] x 100 = -51.4%
Formula
Percentage change = [(329 - 677) / 677] x 100
Subtract the new number by the original number
329 - 677 = -348
-348 ÷ 677 = -0.5140324963072378
-0.5140324963072378 x 100 = -51.4%