319.91% is the change from 231 to 970
Calculation steps:
[( 970 - 231 ) ÷ 231] x 100 = 319.91%
Formula
Percentage change = [(970 - 231) / 231] x 100
Subtract the new number by the original number
970 - 231 = 739
739 ÷ 231 = 3.1991341991341993
3.1991341991341993 x 100 = 319.91%