309.52% is the change from 42 to 172
Calculation steps:
[( 172 - 42 ) ÷ 42] x 100 = 309.52%
Formula
Percentage change = [(172 - 42) / 42] x 100
Subtract the new number by the original number
172 - 42 = 130
130 ÷ 42 = 3.0952380952380953
3.0952380952380953 x 100 = 309.52%