-83.59% is the change from 780 to 128
Calculation steps:
[( 128 - 780 ) ÷ 780] x 100 = -83.59%
Formula
Percentage change = [(128 - 780) / 780] x 100
Subtract the new number by the original number
128 - 780 = -652
-652 ÷ 780 = -0.8358974358974359
-0.8358974358974359 x 100 = -83.59%