221.07% is the change from 280 to 899
Calculation steps:
[( 899 - 280 ) ÷ 280] x 100 = 221.07%
Formula
Percentage change = [(899 - 280) / 280] x 100
Subtract the new number by the original number
899 - 280 = 619
619 ÷ 280 = 2.210714285714286
2.210714285714286 x 100 = 221.07%