4200% is the change from 4 to 172
Calculation steps:
[( 172 - 4 ) ÷ 4] x 100 = 4200%
Formula
Percentage change = [(172 - 4) / 4] x 100
Subtract the new number by the original number
172 - 4 = 168
168 ÷ 4 = 42
42 x 100 = 4200%
Example