46.15% is the change from 13 to 19
Calculation steps:
[( 19 - 13 ) ÷ 13] x 100 = 46.15%
Formula
Percentage change = [(19 - 13) / 13] x 100
Subtract the new number by the original number
19 - 13 = 6
6 ÷ 13 = 0.46153846153846156
0.46153846153846156 x 100 = 46.15%