337.5% is the change from 96 to 420
Calculation steps:
[( 420 - 96 ) ÷ 96] x 100 = 337.5%
Formula
Percentage change = [(420 - 96) / 96] x 100
Subtract the new number by the original number
420 - 96 = 324
324 ÷ 96 = 3.375
3.375 x 100 = 337.5%
Example