424% is the change from 75 to 393
Calculation steps:
[( 393 - 75 ) ÷ 75] x 100 = 424%
Formula
Percentage change = [(393 - 75) / 75] x 100
Subtract the new number by the original number
393 - 75 = 318
318 ÷ 75 = 4.24
4.24 x 100 = 424%
Example