-77.82% is the change from 577 to 128
Calculation steps:
[( 128 - 577 ) ÷ 577] x 100 = -77.82%
Formula
Percentage change = [(128 - 577) / 577] x 100
Subtract the new number by the original number
128 - 577 = -449
-449 ÷ 577 = -0.7781629116117851
-0.7781629116117851 x 100 = -77.82%