-81.28% is the change from 780 to 146
Calculation steps:
[( 146 - 780 ) ÷ 780] x 100 = -81.28%
Formula
Percentage change = [(146 - 780) / 780] x 100
Subtract the new number by the original number
146 - 780 = -634
-634 ÷ 780 = -0.8128205128205128
-0.8128205128205128 x 100 = -81.28%