250% is the change from 206 to 721
Calculation steps:
[( 721 - 206 ) ÷ 206] x 100 = 250%
Formula
Percentage change = [(721 - 206) / 206] x 100
Subtract the new number by the original number
721 - 206 = 515
515 ÷ 206 = 2.5
2.5 x 100 = 250%
Example