907.58% is the change from 66 to 665
Calculation steps:
[( 665 - 66 ) ÷ 66] x 100 = 907.58%
Formula
Percentage change = [(665 - 66) / 66] x 100
Subtract the new number by the original number
665 - 66 = 599
599 ÷ 66 = 9.075757575757576
9.075757575757576 x 100 = 907.58%