-77.3% is the change from 577 to 131
Calculation steps:
[( 131 - 577 ) ÷ 577] x 100 = -77.3%
Formula
Percentage change = [(131 - 577) / 577] x 100
Subtract the new number by the original number
131 - 577 = -446
-446 ÷ 577 = -0.7729636048526863
-0.7729636048526863 x 100 = -77.3%