-83.48% is the change from 775 to 128
Calculation steps:
[( 128 - 775 ) ÷ 775] x 100 = -83.48%
Formula
Percentage change = [(128 - 775) / 775] x 100
Subtract the new number by the original number
128 - 775 = -647
-647 ÷ 775 = -0.8348387096774194
-0.8348387096774194 x 100 = -83.48%