-79.11% is the change from 828 to 173
Calculation steps:
[( 173 - 828 ) ÷ 828] x 100 = -79.11%
Formula
Percentage change = [(173 - 828) / 828] x 100
Subtract the new number by the original number
173 - 828 = -655
-655 ÷ 828 = -0.7910628019323671
-0.7910628019323671 x 100 = -79.11%