51.48% is the change from 540 to 818
Calculation steps:
[( 818 - 540 ) ÷ 540] x 100 = 51.48%
Formula
Percentage change = [(818 - 540) / 540] x 100
Subtract the new number by the original number
818 - 540 = 278
278 ÷ 540 = 0.5148148148148148
0.5148148148148148 x 100 = 51.48%