937.88% is the change from 66 to 685
Calculation steps:
[( 685 - 66 ) ÷ 66] x 100 = 937.88%
Formula
Percentage change = [(685 - 66) / 66] x 100
Subtract the new number by the original number
685 - 66 = 619
619 ÷ 66 = 9.378787878787879
9.378787878787879 x 100 = 937.88%