343.33% is the change from 210 to 931
Calculation steps:
[( 931 - 210 ) ÷ 210] x 100 = 343.33%
Formula
Percentage change = [(931 - 210) / 210] x 100
Subtract the new number by the original number
931 - 210 = 721
721 ÷ 210 = 3.433333333333333
3.433333333333333 x 100 = 343.33%