200% is the change from 20 to 60
Calculation steps:
[( 60 - 20 ) ÷ 20] x 100 = 200%
Formula
Percentage change = [(60 - 20) / 20] x 100
Subtract the new number by the original number
60 - 20 = 40
40 ÷ 20 = 2
2 x 100 = 200%
Example