78.64% is the change from 323 to 577
Calculation steps:
[( 577 - 323 ) ÷ 323] x 100 = 78.64%
Formula
Percentage change = [(577 - 323) / 323] x 100
Subtract the new number by the original number
577 - 323 = 254
254 ÷ 323 = 0.7863777089783281
0.7863777089783281 x 100 = 78.64%