79.26% is the change from 270 to 484
Calculation steps:
[( 484 - 270 ) ÷ 270] x 100 = 79.26%
Formula
Percentage change = [(484 - 270) / 270] x 100
Subtract the new number by the original number
484 - 270 = 214
214 ÷ 270 = 0.7925925925925926
0.7925925925925926 x 100 = 79.26%