-56.5% is the change from 577 to 251
Calculation steps:
[( 251 - 577 ) ÷ 577] x 100 = -56.5%
Formula
Percentage change = [(251 - 577) / 577] x 100
Subtract the new number by the original number
251 - 577 = -326
-326 ÷ 577 = -0.5649913344887348
-0.5649913344887348 x 100 = -56.5%