76.14% is the change from 306 to 539
Calculation steps:
[( 539 - 306 ) ÷ 306] x 100 = 76.14%
Formula
Percentage change = [(539 - 306) / 306] x 100
Subtract the new number by the original number
539 - 306 = 233
233 ÷ 306 = 0.761437908496732
0.761437908496732 x 100 = 76.14%