77.12% is the change from 306 to 542
Calculation steps:
[( 542 - 306 ) ÷ 306] x 100 = 77.12%
Formula
Percentage change = [(542 - 306) / 306] x 100
Subtract the new number by the original number
542 - 306 = 236
236 ÷ 306 = 0.7712418300653595
0.7712418300653595 x 100 = 77.12%