-80.9% is the change from 780 to 149
Calculation steps:
[( 149 - 780 ) ÷ 780] x 100 = -80.9%
Formula
Percentage change = [(149 - 780) / 780] x 100
Subtract the new number by the original number
149 - 780 = -631
-631 ÷ 780 = -0.808974358974359
-0.808974358974359 x 100 = -80.9%