-46.1% is the change from 577 to 311
Calculation steps:
[( 311 - 577 ) ÷ 577] x 100 = -46.1%
Formula
Percentage change = [(311 - 577) / 577] x 100
Subtract the new number by the original number
311 - 577 = -266
-266 ÷ 577 = -0.4610051993067591
-0.4610051993067591 x 100 = -46.1%