98.69% is the change from 306 to 608
Calculation steps:
[( 608 - 306 ) ÷ 306] x 100 = 98.69%
Formula
Percentage change = [(608 - 306) / 306] x 100
Subtract the new number by the original number
608 - 306 = 302
302 ÷ 306 = 0.9869281045751634
0.9869281045751634 x 100 = 98.69%