306.25% is the change from 96 to 390
Calculation steps:
[( 390 - 96 ) ÷ 96] x 100 = 306.25%
Formula
Percentage change = [(390 - 96) / 96] x 100
Subtract the new number by the original number
390 - 96 = 294
294 ÷ 96 = 3.0625
3.0625 x 100 = 306.25%
Example