306.06% is the change from 66 to 268
Calculation steps:
[( 268 - 66 ) ÷ 66] x 100 = 306.06%
Formula
Percentage change = [(268 - 66) / 66] x 100
Subtract the new number by the original number
268 - 66 = 202
202 ÷ 66 = 3.0606060606060606
3.0606060606060606 x 100 = 306.06%