246.61% is the change from 221 to 766
Calculation steps:
[( 766 - 221 ) ÷ 221] x 100 = 246.61%
Formula
Percentage change = [(766 - 221) / 221] x 100
Subtract the new number by the original number
766 - 221 = 545
545 ÷ 221 = 2.4660633484162897
2.4660633484162897 x 100 = 246.61%