85.19% is the change from 270 to 500
Calculation steps:
[( 500 - 270 ) ÷ 270] x 100 = 85.19%
Formula
Percentage change = [(500 - 270) / 270] x 100
Subtract the new number by the original number
500 - 270 = 230
230 ÷ 270 = 0.8518518518518519
0.8518518518518519 x 100 = 85.19%