870.59% is the change from 85 to 825
Calculation steps:
[( 825 - 85 ) ÷ 85] x 100 = 870.59%
Formula
Percentage change = [(825 - 85) / 85] x 100
Subtract the new number by the original number
825 - 85 = 740
740 ÷ 85 = 8.705882352941176
8.705882352941176 x 100 = 870.59%