308.97% is the change from 234 to 957
Calculation steps:
[( 957 - 234 ) ÷ 234] x 100 = 308.97%
Formula
Percentage change = [(957 - 234) / 234] x 100
Subtract the new number by the original number
957 - 234 = 723
723 ÷ 234 = 3.08974358974359
3.08974358974359 x 100 = 308.97%