-78.2% is the change from 711 to 155
Calculation steps:
[( 155 - 711 ) ÷ 711] x 100 = -78.2%
Formula
Percentage change = [(155 - 711) / 711] x 100
Subtract the new number by the original number
155 - 711 = -556
-556 ÷ 711 = -0.7819971870604782
-0.7819971870604782 x 100 = -78.2%