248.72% is the change from 234 to 816
Calculation steps:
[( 816 - 234 ) ÷ 234] x 100 = 248.72%
Formula
Percentage change = [(816 - 234) / 234] x 100
Subtract the new number by the original number
816 - 234 = 582
582 ÷ 234 = 2.4871794871794872
2.4871794871794872 x 100 = 248.72%