118.3% is the change from 306 to 668
Calculation steps:
[( 668 - 306 ) ÷ 306] x 100 = 118.3%
Formula
Percentage change = [(668 - 306) / 306] x 100
Subtract the new number by the original number
668 - 306 = 362
362 ÷ 306 = 1.1830065359477124
1.1830065359477124 x 100 = 118.3%