-79.39% is the change from 825 to 170
Calculation steps:
[( 170 - 825 ) ÷ 825] x 100 = -79.39%
Formula
Percentage change = [(170 - 825) / 825] x 100
Subtract the new number by the original number
170 - 825 = -655
-655 ÷ 825 = -0.793939393939394
-0.793939393939394 x 100 = -79.39%