209.8% is the change from 306 to 948
Calculation steps:
[( 948 - 306 ) ÷ 306] x 100 = 209.8%
Formula
Percentage change = [(948 - 306) / 306] x 100
Subtract the new number by the original number
948 - 306 = 642
642 ÷ 306 = 2.0980392156862746
2.0980392156862746 x 100 = 209.8%