259.65% is the change from 228 to 820
Calculation steps:
[( 820 - 228 ) ÷ 228] x 100 = 259.65%
Formula
Percentage change = [(820 - 228) / 228] x 100
Subtract the new number by the original number
820 - 228 = 592
592 ÷ 228 = 2.5964912280701755
2.5964912280701755 x 100 = 259.65%