-77.82% is the change from 780 to 173
Calculation steps:
[( 173 - 780 ) ÷ 780] x 100 = -77.82%
Formula
Percentage change = [(173 - 780) / 780] x 100
Subtract the new number by the original number
173 - 780 = -607
-607 ÷ 780 = -0.7782051282051282
-0.7782051282051282 x 100 = -77.82%