77.88% is the change from 339 to 603
Calculation steps:
[( 603 - 339 ) ÷ 339] x 100 = 77.88%
Formula
Percentage change = [(603 - 339) / 339] x 100
Subtract the new number by the original number
603 - 339 = 264
264 ÷ 339 = 0.7787610619469026
0.7787610619469026 x 100 = 77.88%