-83.57% is the change from 779 to 128
Calculation steps:
[( 128 - 779 ) ÷ 779] x 100 = -83.57%
Formula
Percentage change = [(128 - 779) / 779] x 100
Subtract the new number by the original number
128 - 779 = -651
-651 ÷ 779 = -0.8356867779204108
-0.8356867779204108 x 100 = -83.57%