868.24% is the change from 85 to 823
Calculation steps:
[( 823 - 85 ) ÷ 85] x 100 = 868.24%
Formula
Percentage change = [(823 - 85) / 85] x 100
Subtract the new number by the original number
823 - 85 = 738
738 ÷ 85 = 8.68235294117647
8.68235294117647 x 100 = 868.24%