682.35% is the change from 85 to 665
Calculation steps:
[( 665 - 85 ) ÷ 85] x 100 = 682.35%
Formula
Percentage change = [(665 - 85) / 85] x 100
Subtract the new number by the original number
665 - 85 = 580
580 ÷ 85 = 6.823529411764706
6.823529411764706 x 100 = 682.35%