426.32% is the change from 19 to 100
Calculation steps:
[( 100 - 19 ) ÷ 19] x 100 = 426.32%
Formula
Percentage change = [(100 - 19) / 19] x 100
Subtract the new number by the original number
100 - 19 = 81
81 ÷ 19 = 4.2631578947368425
4.2631578947368425 x 100 = 426.32%