70.21% is the change from 339 to 577
Calculation steps:
[( 577 - 339 ) ÷ 339] x 100 = 70.21%
Formula
Percentage change = [(577 - 339) / 339] x 100
Subtract the new number by the original number
577 - 339 = 238
238 ÷ 339 = 0.7020648967551623
0.7020648967551623 x 100 = 70.21%