106.56% is the change from 305 to 630
Calculation steps:
[( 630 - 305 ) ÷ 305] x 100 = 106.56%
Formula
Percentage change = [(630 - 305) / 305] x 100
Subtract the new number by the original number
630 - 305 = 325
325 ÷ 305 = 1.0655737704918034
1.0655737704918034 x 100 = 106.56%