312.12% is the change from 66 to 272
Calculation steps:
[( 272 - 66 ) ÷ 66] x 100 = 312.12%
Formula
Percentage change = [(272 - 66) / 66] x 100
Subtract the new number by the original number
272 - 66 = 206
206 ÷ 66 = 3.121212121212121
3.121212121212121 x 100 = 312.12%