317.9% is the change from 229 to 957
Calculation steps:
[( 957 - 229 ) ÷ 229] x 100 = 317.9%
Formula
Percentage change = [(957 - 229) / 229] x 100
Subtract the new number by the original number
957 - 229 = 728
728 ÷ 229 = 3.1790393013100435
3.1790393013100435 x 100 = 317.9%