135% is the change from 20 to 47
Calculation steps:
[( 47 - 20 ) ÷ 20] x 100 = 135%
Formula
Percentage change = [(47 - 20) / 20] x 100
Subtract the new number by the original number
47 - 20 = 27
27 ÷ 20 = 1.35
1.35 x 100 = 135%
Example