380.3% is the change from 66 to 317
Calculation steps:
[( 317 - 66 ) ÷ 66] x 100 = 380.3%
Formula
Percentage change = [(317 - 66) / 66] x 100
Subtract the new number by the original number
317 - 66 = 251
251 ÷ 66 = 3.803030303030303
3.803030303030303 x 100 = 380.3%