208.89% is the change from 270 to 834
Calculation steps:
[( 834 - 270 ) ÷ 270] x 100 = 208.89%
Formula
Percentage change = [(834 - 270) / 270] x 100
Subtract the new number by the original number
834 - 270 = 564
564 ÷ 270 = 2.088888888888889
2.088888888888889 x 100 = 208.89%