2985% is the change from 20 to 617
Calculation steps:
[( 617 - 20 ) ÷ 20] x 100 = 2985%
Formula
Percentage change = [(617 - 20) / 20] x 100
Subtract the new number by the original number
617 - 20 = 597
597 ÷ 20 = 29.85
29.85 x 100 = 2985%
Example