212.75% is the change from 306 to 957
Calculation steps:
[( 957 - 306 ) ÷ 306] x 100 = 212.75%
Formula
Percentage change = [(957 - 306) / 306] x 100
Subtract the new number by the original number
957 - 306 = 651
651 ÷ 306 = 2.127450980392157
2.127450980392157 x 100 = 212.75%