-23.63% is the change from 419 to 320
Calculation steps:
[( 320 - 419 ) ÷ 419] x 100 = -23.63%
Formula
Percentage change = [(320 - 419) / 419] x 100
Subtract the new number by the original number
320 - 419 = -99
-99 ÷ 419 = -0.23627684964200477
-0.23627684964200477 x 100 = -23.63%