0.24% is the change from 419 to 420
Calculation steps:
[( 420 - 419 ) ÷ 419] x 100 = 0.24%
Formula
Percentage change = [(420 - 419) / 419] x 100
Subtract the new number by the original number
420 - 419 = 1
1 ÷ 419 = 0.002386634844868735
0.002386634844868735 x 100 = 0.24%