807.58% is the change from 66 to 599
Calculation steps:
[( 599 - 66 ) ÷ 66] x 100 = 807.58%
Formula
Percentage change = [(599 - 66) / 66] x 100
Subtract the new number by the original number
599 - 66 = 533
533 ÷ 66 = 8.075757575757576
8.075757575757576 x 100 = 807.58%