-94.8% is the change from 577 to 30
Calculation steps:
[( 30 - 577 ) ÷ 577] x 100 = -94.8%
Formula
Percentage change = [(30 - 577) / 577] x 100
Subtract the new number by the original number
30 - 577 = -547
-547 ÷ 577 = -0.9480069324090121
-0.9480069324090121 x 100 = -94.8%