437.88% is the change from 66 to 355
Calculation steps:
[( 355 - 66 ) ÷ 66] x 100 = 437.88%
Formula
Percentage change = [(355 - 66) / 66] x 100
Subtract the new number by the original number
355 - 66 = 289
289 ÷ 66 = 4.378787878787879
4.378787878787879 x 100 = 437.88%