258.77% is the change from 228 to 818
Calculation steps:
[( 818 - 228 ) ÷ 228] x 100 = 258.77%
Formula
Percentage change = [(818 - 228) / 228] x 100
Subtract the new number by the original number
818 - 228 = 590
590 ÷ 228 = 2.587719298245614
2.587719298245614 x 100 = 258.77%