383.33% is the change from 66 to 319
Calculation steps:
[( 319 - 66 ) ÷ 66] x 100 = 383.33%
Formula
Percentage change = [(319 - 66) / 66] x 100
Subtract the new number by the original number
319 - 66 = 253
253 ÷ 66 = 3.8333333333333335
3.8333333333333335 x 100 = 383.33%