805.88% is the change from 85 to 770
Calculation steps:
[( 770 - 85 ) ÷ 85] x 100 = 805.88%
Formula
Percentage change = [(770 - 85) / 85] x 100
Subtract the new number by the original number
770 - 85 = 685
685 ÷ 85 = 8.058823529411764
8.058823529411764 x 100 = 805.88%