-91.33% is the change from 577 to 50
Calculation steps:
[( 50 - 577 ) ÷ 577] x 100 = -91.33%
Formula
Percentage change = [(50 - 577) / 577] x 100
Subtract the new number by the original number
50 - 577 = -527
-527 ÷ 577 = -0.9133448873483535
-0.9133448873483535 x 100 = -91.33%