85% is the change from 20 to 37
Calculation steps:
[( 37 - 20 ) ÷ 20] x 100 = 85%
Formula
Percentage change = [(37 - 20) / 20] x 100
Subtract the new number by the original number
37 - 20 = 17
17 ÷ 20 = 0.85
0.85 x 100 = 85%
Example