1234.78% is the change from 23 to 307
Calculation steps:
[( 307 - 23 ) ÷ 23] x 100 = 1234.78%
Formula
Percentage change = [(307 - 23) / 23] x 100
Subtract the new number by the original number
307 - 23 = 284
284 ÷ 23 = 12.347826086956522
12.347826086956522 x 100 = 1234.78%