2750% is the change from 20 to 570
Calculation steps:
[( 570 - 20 ) ÷ 20] x 100 = 2750%
Formula
Percentage change = [(570 - 20) / 20] x 100
Subtract the new number by the original number
570 - 20 = 550
550 ÷ 20 = 27.5
27.5 x 100 = 2750%
Example