2020% is the change from 30 to 636
Calculation steps:
[( 636 - 30 ) ÷ 30] x 100 = 2020%
Formula
Percentage change = [(636 - 30) / 30] x 100
Subtract the new number by the original number
636 - 30 = 606
606 ÷ 30 = 20.2
20.2 x 100 = 2020%
Example