323% is the change from 100 to 423
Calculation steps:
[( 423 - 100 ) ÷ 100] x 100 = 323%
Formula
Percentage change = [(423 - 100) / 100] x 100
Subtract the new number by the original number
423 - 100 = 323
323 ÷ 100 = 3.23
3.23 x 100 = 323%
Example