210.78% is the change from 306 to 951
Calculation steps:
[( 951 - 306 ) ÷ 306] x 100 = 210.78%
Formula
Percentage change = [(951 - 306) / 306] x 100
Subtract the new number by the original number
951 - 306 = 645
645 ÷ 306 = 2.107843137254902
2.107843137254902 x 100 = 210.78%