5.26% is the change from 19 to 20
Calculation steps:
[( 20 - 19 ) ÷ 19] x 100 = 5.26%
Formula
Percentage change = [(20 - 19) / 19] x 100
Subtract the new number by the original number
20 - 19 = 1
1 ÷ 19 = 0.05263157894736842
0.05263157894736842 x 100 = 5.26%