284.09% is the change from 220 to 845
Calculation steps:
[( 845 - 220 ) ÷ 220] x 100 = 284.09%
Formula
Percentage change = [(845 - 220) / 220] x 100
Subtract the new number by the original number
845 - 220 = 625
625 ÷ 220 = 2.840909090909091
2.840909090909091 x 100 = 284.09%