100.95% is the change from 420 to 844
Calculation steps:
[( 844 - 420 ) ÷ 420] x 100 = 100.95%
Formula
Percentage change = [(844 - 420) / 420] x 100
Subtract the new number by the original number
844 - 420 = 424
424 ÷ 420 = 1.0095238095238095
1.0095238095238095 x 100 = 100.95%