-78.7% is the change from 798 to 170
Calculation steps:
[( 170 - 798 ) ÷ 798] x 100 = -78.7%
Formula
Percentage change = [(170 - 798) / 798] x 100
Subtract the new number by the original number
170 - 798 = -628
-628 ÷ 798 = -0.7869674185463659
-0.7869674185463659 x 100 = -78.7%