109.05% is the change from 420 to 878
Calculation steps:
[( 878 - 420 ) ÷ 420] x 100 = 109.05%
Formula
Percentage change = [(878 - 420) / 420] x 100
Subtract the new number by the original number
878 - 420 = 458
458 ÷ 420 = 1.0904761904761904
1.0904761904761904 x 100 = 109.05%