97.39% is the change from 307 to 606
Calculation steps:
[( 606 - 307 ) ÷ 307] x 100 = 97.39%
Formula
Percentage change = [(606 - 307) / 307] x 100
Subtract the new number by the original number
606 - 307 = 299
299 ÷ 307 = 0.9739413680781759
0.9739413680781759 x 100 = 97.39%