87.34% is the change from 308 to 577
Calculation steps:
[( 577 - 308 ) ÷ 308] x 100 = 87.34%
Formula
Percentage change = [(577 - 308) / 308] x 100
Subtract the new number by the original number
577 - 308 = 269
269 ÷ 308 = 0.8733766233766234
0.8733766233766234 x 100 = 87.34%