-78.15% is the change from 778 to 170
Calculation steps:
[( 170 - 778 ) ÷ 778] x 100 = -78.15%
Formula
Percentage change = [(170 - 778) / 778] x 100
Subtract the new number by the original number
170 - 778 = -608
-608 ÷ 778 = -0.781491002570694
-0.781491002570694 x 100 = -78.15%