60.13% is the change from 306 to 490
Calculation steps:
[( 490 - 306 ) ÷ 306] x 100 = 60.13%
Formula
Percentage change = [(490 - 306) / 306] x 100
Subtract the new number by the original number
490 - 306 = 184
184 ÷ 306 = 0.6013071895424836
0.6013071895424836 x 100 = 60.13%