264.71% is the change from 221 to 806
Calculation steps:
[( 806 - 221 ) ÷ 221] x 100 = 264.71%
Formula
Percentage change = [(806 - 221) / 221] x 100
Subtract the new number by the original number
806 - 221 = 585
585 ÷ 221 = 2.6470588235294117
2.6470588235294117 x 100 = 264.71%