170% is the change from 270 to 729
Calculation steps:
[( 729 - 270 ) ÷ 270] x 100 = 170%
Formula
Percentage change = [(729 - 270) / 270] x 100
Subtract the new number by the original number
729 - 270 = 459
459 ÷ 270 = 1.7
1.7 x 100 = 170%
Example