-19.81% is the change from 419 to 336
Calculation steps:
[( 336 - 419 ) ÷ 419] x 100 = -19.81%
Formula
Percentage change = [(336 - 419) / 419] x 100
Subtract the new number by the original number
336 - 419 = -83
-83 ÷ 419 = -0.19809069212410502
-0.19809069212410502 x 100 = -19.81%