85.56% is the change from 270 to 501
Calculation steps:
[( 501 - 270 ) ÷ 270] x 100 = 85.56%
Formula
Percentage change = [(501 - 270) / 270] x 100
Subtract the new number by the original number
501 - 270 = 231
231 ÷ 270 = 0.8555555555555555
0.8555555555555555 x 100 = 85.56%