88.56% is the change from 306 to 577
Calculation steps:
[( 577 - 306 ) ÷ 306] x 100 = 88.56%
Formula
Percentage change = [(577 - 306) / 306] x 100
Subtract the new number by the original number
577 - 306 = 271
271 ÷ 306 = 0.8856209150326797
0.8856209150326797 x 100 = 88.56%