270.61% is the change from 228 to 845
Calculation steps:
[( 845 - 228 ) ÷ 228] x 100 = 270.61%
Formula
Percentage change = [(845 - 228) / 228] x 100
Subtract the new number by the original number
845 - 228 = 617
617 ÷ 228 = 2.706140350877193
2.706140350877193 x 100 = 270.61%