-21.72% is the change from 419 to 328
Calculation steps:
[( 328 - 419 ) ÷ 419] x 100 = -21.72%
Formula
Percentage change = [(328 - 419) / 419] x 100
Subtract the new number by the original number
328 - 419 = -91
-91 ÷ 419 = -0.2171837708830549
-0.2171837708830549 x 100 = -21.72%