306.79% is the change from 221 to 899
Calculation steps:
[( 899 - 221 ) ÷ 221] x 100 = 306.79%
Formula
Percentage change = [(899 - 221) / 221] x 100
Subtract the new number by the original number
899 - 221 = 678
678 ÷ 221 = 3.067873303167421
3.067873303167421 x 100 = 306.79%