278.95% is the change from 228 to 864
Calculation steps:
[( 864 - 228 ) ÷ 228] x 100 = 278.95%
Formula
Percentage change = [(864 - 228) / 228] x 100
Subtract the new number by the original number
864 - 228 = 636
636 ÷ 228 = 2.789473684210526
2.789473684210526 x 100 = 278.95%