2050% is the change from 20 to 430
Calculation steps:
[( 430 - 20 ) ÷ 20] x 100 = 2050%
Formula
Percentage change = [(430 - 20) / 20] x 100
Subtract the new number by the original number
430 - 20 = 410
410 ÷ 20 = 20.5
20.5 x 100 = 2050%
Example