2300% is the change from 20 to 480
Calculation steps:
[( 480 - 20 ) ÷ 20] x 100 = 2300%
Formula
Percentage change = [(480 - 20) / 20] x 100
Subtract the new number by the original number
480 - 20 = 460
460 ÷ 20 = 23
23 x 100 = 2300%
Example