87.58% is the change from 306 to 574
Calculation steps:
[( 574 - 306 ) ÷ 306] x 100 = 87.58%
Formula
Percentage change = [(574 - 306) / 306] x 100
Subtract the new number by the original number
574 - 306 = 268
268 ÷ 306 = 0.8758169934640523
0.8758169934640523 x 100 = 87.58%