59.8% is the change from 306 to 489
Calculation steps:
[( 489 - 306 ) ÷ 306] x 100 = 59.8%
Formula
Percentage change = [(489 - 306) / 306] x 100
Subtract the new number by the original number
489 - 306 = 183
183 ÷ 306 = 0.5980392156862745
0.5980392156862745 x 100 = 59.8%