259.21% is the change from 228 to 819
Calculation steps:
[( 819 - 228 ) ÷ 228] x 100 = 259.21%
Formula
Percentage change = [(819 - 228) / 228] x 100
Subtract the new number by the original number
819 - 228 = 591
591 ÷ 228 = 2.5921052631578947
2.5921052631578947 x 100 = 259.21%