-90.42% is the change from 825 to 79
Calculation steps:
[( 79 - 825 ) ÷ 825] x 100 = -90.42%
Formula
Percentage change = [(79 - 825) / 825] x 100
Subtract the new number by the original number
79 - 825 = -746
-746 ÷ 825 = -0.9042424242424243
-0.9042424242424243 x 100 = -90.42%