84.44% is the change from 270 to 498
Calculation steps:
[( 498 - 270 ) ÷ 270] x 100 = 84.44%
Formula
Percentage change = [(498 - 270) / 270] x 100
Subtract the new number by the original number
498 - 270 = 228
228 ÷ 270 = 0.8444444444444444
0.8444444444444444 x 100 = 84.44%