4550% is the change from 20 to 930
Calculation steps:
[( 930 - 20 ) ÷ 20] x 100 = 4550%
Formula
Percentage change = [(930 - 20) / 20] x 100
Subtract the new number by the original number
930 - 20 = 910
910 ÷ 20 = 45.5
45.5 x 100 = 4550%
Example