275.56% is the change from 225 to 845
Calculation steps:
[( 845 - 225 ) ÷ 225] x 100 = 275.56%
Formula
Percentage change = [(845 - 225) / 225] x 100
Subtract the new number by the original number
845 - 225 = 620
620 ÷ 225 = 2.7555555555555555
2.7555555555555555 x 100 = 275.56%