330% is the change from 40 to 172
Calculation steps:
[( 172 - 40 ) ÷ 40] x 100 = 330%
Formula
Percentage change = [(172 - 40) / 40] x 100
Subtract the new number by the original number
172 - 40 = 132
132 ÷ 40 = 3.3
3.3 x 100 = 330%
Example