254.35% is the change from 230 to 815
Calculation steps:
[( 815 - 230 ) ÷ 230] x 100 = 254.35%
Formula
Percentage change = [(815 - 230) / 230] x 100
Subtract the new number by the original number
815 - 230 = 585
585 ÷ 230 = 2.5434782608695654
2.5434782608695654 x 100 = 254.35%