331.6% is the change from 231 to 997
Calculation steps:
[( 997 - 231 ) ÷ 231] x 100 = 331.6%
Formula
Percentage change = [(997 - 231) / 231] x 100
Subtract the new number by the original number
997 - 231 = 766
766 ÷ 231 = 3.316017316017316
3.316017316017316 x 100 = 331.6%